I think selling a 305, even if clean/runs well, is a hard sell. The one I had was crusty with more miles but ran well, sold it for $50 to a co-worker, might of gotten slightly more (still under $100) elsewhere. What year is it? In case anyone cares if it's a 87'+. I've heard of them getting more but it has to be a specific buyer looking for one.
383 CCC QJet- BRF 2004r-8.5" 3.42 -313/344@RW - 13.35 @103
350 MAF/SD TPI- CRF 2004r-7.5" 3.42 -248/340@RW - 14.55 @ 96
Stockish daily driver