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that is a hell of alot of boost fined some MLS head gaskets 600 to 800 i wound think more like the hi side you will need some very good stuff .cam roller may be custom comp or howards

the heads may not be good. not a ford guy.but you do not want to go nuts on the ex port need to have a good port to make the turbo work. and not a big lazy port . the hp is not much it should be...

i have built a twin turbo big block 542 chevy and did some work on a twin turbo buick V6 do not do much port work and very little on the ex port i wound run a very good ex valves ss or inconel . you...