I have a mark IV 502 that I'm freshing up.
Does anyone make file fit rings for the stock JE pistons?
I was told that these pistons use metric rings?and no one makes file fit for them.Is this true?
Thanks

I know finding them at a decent price was a real pain. I got mine at Scoggins Dickey. Been a while back but I think you are correct they were not file to fit.

http://www.sdpc2000.com/cart.asp?act...=1034&pid=2049

I seem to remember I could only find them through GM. Not file to fit though.

GM part #12524293

I ordered mine direct from JE. They where great to work with even sold me a single ring after I broke one filing it.