Thanks everyone for all the great info. I took pics of the calipers before I put the wheels on and the round part with the stamp on it looks like I have the 40mm pistons. It is really rusty but if I zoom in, I think I am seeing a "4" and possibly a "0". I guess before I buy the rebuild kit, I will pull a wheel off again and use a file and get a better look. I am going to attempt to rebuild them on the car, any input on that? There are youtube videos of guys rebuilding them on the car but the opposing pistons may make it hard.
These calipers are getting scarce, and FCP has only the left rear( reman shown as having the 40mm piston). EEURO has no rear calipers for the 940T. I called TASCA and they ccouldn't tell me what size my rear calipers are even with the VIN. Thanks!
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