383 Build - Help!

Hey Matt nice to see that you´re working on your Fish.
Here´s a link to KB about the top ring end gap.
http://www.kb-silvolite.com/kb_car/clearance_pop.php
When I buillt the engine for my Fish, I had the block square decked to ensure that the pistons were equally below deck in all four corners.
I use a steel shim head gasket for my 915 heads.
According to my calculations it would give me a 10.2:1 in compression.
I´m running the MP purple 284/484 108 degree cam in the engine, but that wouldn`t be my choice if I would do it allover again. I would probably with a Hughe cam instead.