Rear Main Seal

Is it the same as Superformance?
Since I'm not pulling the crank, would I be able to get the block side out again without damaging it if I put it in to check it? Pretty sure my block got align honed. Gonna have to look at the machine shop paperwork. It's been 12 years...
Nervous about getting this right the first time. I'm getting tired of pulling engine and transmission. This is the 5th or 6th time in the last 3 years.

Thanks YR!