The summit racing part number for the total seal ring kit for the Supercoupe (89-95) is TSR-T7174 $178.69. That is for the stock bore. If you have overbored the engine, you'll have to change the part number. For example, a .030 overbore needs to use TSR-T7174-30
I'm going with these on my bottom end rebuild, along with new .030 over Sealed Power pistons. These pistons are slightly stronger, and lighter than stock, and come with coated skirts. Should be good for anything under 400whp ish with no nirous..
I rebult my bottom end about 20k miles ago. I reused the original pistons, honed the cylinders and installed new factory ford rings. Worked great for a the first 10k or so, then started to blow by shortly after installing the MP blower and plenum with a smaller pulley. The car has been making 345.5 rwhp and 402.8 rwtq for about the last 10k miles, and I drive it hard. Had I kept the stock '92 blower on the car, it would probably still be ok. But the OEM style rings weren't meant for those types of cylinder pressures, and will eventually blow by.
Jeramie