Don't get me wrong here, I love inlines. That's why I'm here,

but,

you talk of 5000 dollar crate engines....

You can buy a brand new 4 bolt main 350 crate engine at any GM dealership for 1200 to 1300 dollars By the time you buy the neat hot rod stuff for an inline engine, you will exceed what the equivalent parts would cost for a small block V8.

I think if you'll crunch the numbers, you'll find 6 cylinder performance to be much more expensive per horsepower than a crate V8 engine.

That said, I own three trucks with inline engines right now. I love them, they are worth the extra expense to me.