like i said earlier. you won't know anything about cr until you get the block back. it sounds like you are miss matching parts. like the post above said " wish i'd done this or that" think this through and later on you will be much happier. i would not use a dome piston, build in quench, match the parts and you will love how it runs. i would not use a steel shim head gasket w/alum heads. i would recommend studs and not bolts on the heads and use plenty of thread sealer. remember you ask for a review of your build and everyone has as input just like me. keep asking even if you don't like what you are hearing.