Cometic rear main seal vs...

I use Cometic gaskets and they work great and you can get whatever thickness you want. Call them and talk to Jason if you have any problem and he will take care of you. I had a 440-500 inch that the guy used .080 head gaskets and I went up to Cometic and Jason had the intake gaskets made while I waited.
Living in N.E. Ohio everyplace is about 10 - 30 miles from me.
Well not everything but enough that I can get what I need.