I am a great believer in getting the " core " of the engine right then building onto it , to many people like to bolt things on like bigger turbo 500 plenum / intercooler without making sure that the bottom end and head have been built to a good specification .

My reasoning for that is that most good enthusiast can bolt a turbo on , fit bigger intercooler , fit 500 bits to inlet side with larger hoses ( or should that be lager ) but sometime compression ratio is too high to take the strain and head gasket / detonation issues ensue .

Spend money on the core first then move forward , I know this does not answer your question just my 2 pennies worth

Will be building one soon for 500 hopefully to go into a new project more of which will be posted here at a later date .

Some years ago we ran 35 lbs of boost in a 3 door with 6.2 CR pistons in , some people were not happy about being out powered by an engine built in a garage on a farm !!!!!