I got a call from a friend up in Provo asking for some help on a conversion that he did on a boat of his. It was a mid 90's 5.7 l. 225 hp SBC that he worked over, changed the cam, pistons, etc.. and is supposed to be getting 300 hp out of it now. The only issue is, he is only getting about 4000 rpms out of it and then it's topping out. It's a Thunderbolt IV system.
I know this is vague, but it's all the info I have. If someone has a lead on a shop or mechanic in that area, I'm sure the help would be appreciated (and compensated)