I've run many different wheel/tire sizes in the back without a notch.
That 275/60x15 is a sizable tire. Depending on which brand of tire you buy in that size the section width is what needs to be paid attention to. The M/T drag radial in that size is a 11.1" section width and 28.19" tall. Nitto is 11" and 28".
Tire diameter of 28" is generally not the fitment problem, but larger diameters mean the tire is closer the frame at the back as the frame rails move outboard.
Also be aware that a wide rim on most drag racing tires is not the norm. Optimum wheel width is provided by the tire manufacturer in the specs for a particular size. It's all about the sidewall and footprint with the sticky tires. The M/T drag radial in a 275/60x15 recommended width is 8" with a range of 7.5" to 9.5". Just one thing you need to keep in mind when selecting wheels for a specific tire size and use.
#1 I've run a Hoosier 275/45x16 Hoosier A6 tire, it's 11.2" section width at 25.6" tall on a 16x8, zero offset wheel and a 10 mm hubcentric spacer to move it outboard. No touch.
#2 I've run a Hoosier 11.5 x 27 QTP bias slick, it's 11.3" section width at 27" tall on a 15x8 steel rally wheel with I believe was about 4 1/4" back spacing and the 10 mm hubcentric spacer. Tire very close at the rear of the frame rail and very very light touch when you would turn fast to the left. But would say rub not an issue when running a pure slick that doesn't see street driving, only straight ahead drags.
#3 I've run a BFG Comp Summer tire in a 255/50x16, it's about 10.4" at 26" tall on a 16x8 zero offset wheel and a 10 mm spacer. No touch.
#4 Currently run a Falket RT660 275/40x17, it's 11.1" width at 25.7" tall" on a 17x9 wheel with a 12 mm offset and run an 18mm hub centric spacer.
For me the name of the came is "no touch" when it comes to tire wheels fitting. Those first three tire/wheel combo were run without any concern for rub and fit. The super fat 11.5x27 Hooiser slicks at a 11.3" section width were the max i could squeeze into the wells in back without them looking out of place. And that tire never touched the quarter panel well lips. So never had to roll the lips to fit any tire, lips are bone stock.
Those Falken 275/40x17 are very close in width to the 275/60x15 you are interested in running, just not as tall. I would not tell, say, exactly what backspacing/offset you could need with your combo. A lot of minor factors add up to moving the wheel inboard or outboard to achieve a good fit of a fat tire in a Monte.
Rear brakes whether stock cast drums, alum drums, an aftermarket disc setup,, swapping the rear for something other than stock, or something as simple as the rear being a little offset left or right of center. All these effect tire fit.
A note here about my fitments, my 8 1/2" rear has drum brakes with alum drums, they adds 2.5mm each side (about .100") to the width of the 8 1/2' rear. As mentioned silly thing can effect the final fit.
So I would first decide what exact tire you want to install, pull the specs, and then look for a wheel that is available in the width for the tire and then what available back spacings are available. Error on backspacing that moves the wheel inboard. A hubcentric wheel space can then be used to move the wheel/tire outboard to adjust the fit in the wheel well. That was my method to use a 11.1" section width tire on a 12mm offset wheel (only offset available in my wheel choice). An 18mm spacer was made to center the tire in the well. But be aware that smaller than a 10mm spacer may not be available.
Those Falkens are a 200 wear autox tire, I was stuck with using that tire in a 17" size. Hindsight says i could have choose an 19mm (.0394" more) and maybe not take the paint off the frame in a very very small area when I lean the car over hard. One milometer can make or brake a good fit.
Here's who I had make spacers for my car. Would never do anything but a hub centric spacer. They are pricey and if money allows get them black anodized.
I run the old 10mm set up front and the new 18mm on the back. Also longer ARP wheel studs to make me feel safer.
If the car is a serious drag race car be aware that wheel studs are a safety inspection item, NHRA has a say in the length. https://www.uswheeladapters.com/shop/chevy-5x4-75-12-1-5-hcso/
Hope i didn't confuse you and you get a little opinion from this.