I want to let everyone know that there has been one issue with the calipers that I recommended from Speedway Motors. Its the Speedway Motors Big Bore Metric Calipers - PN# 91031040 $59.99 for each.

Here are the links that describe the issue.

http://www.maliburacing.com/forum/viewtopic.php?f=2&t=111382

http://www.gbodyforum.com/viewtopic.php?f=14&t=35367&sid=fe32adcefeafad16021984241fd71525

I have not had any problems with the ones I have bought. I have been told that these calipers are made by U.S. Brake when I first bought mine from Speedway Motors.

There are other options for big bore calipers, but they are a little more expensive from Wilwood.

http://www.speedwaymotors.com/Wilwood-GM-Iron-Metric-Calipers,24192.html