[elvin315]

Originally Posted by sccatera97

The GTO calipers I have look similar to the 1998 - 2002 Camaro/Firebird. My daughter has a 1998 Camaro and I will try to compare the two. If they are the same, F bady calipers should be easier to find.

If the 3rd generation F Bodies don't have the same Opel calipers, I doubt they will fit the Catera. Look for the OPEL cast into the caliper. While you're at it measure the diameter and thickness of the disc. The Catera disc is:

11.65 in. dia. x 1.1 in. thick. / 296mm dia. x 28mm thick.

If the F Body discs are thicker then likewise the calipers will be wider. If the Catera discs are thinner, the F caliper's pistons might overextend and pop out or jam in the bores. The seals might leak. Not trying to rain on your parade. I hope they do fit the Catera. Just pointing out some potential pitfalls. Brakes are too important to second guess.

These pictures are from RockAuto.com and are not to scale.

F Body =>GTO =>

It looks a lot like the GTO caliper but there are a few differences in the casting like the part between the cut-outs and the ribs on top. They still could work but it depends on the mounting bracket. Whether the F bracket fits the Catera hub is another question mark. Maybe the F caliper fits the Catera or GTO bracket. That would solve a lot of problems.

Elvin