just a thought though. maybe it needs a different thread. who knows. i dont know too much about exhaust flow and header tuning and all that....
but, if we are saying that you need this amount of length and such for proper gains and things, i notice that all of our exhaust manifolds/headers look like this shape "[". is there any way we could bend that [ shape more into a ( to achieve length, but give up 1-2'' of fan space to keep the length there, and just run slim fans and possibly get a radiator support made that allows the radiator to sit 2-3'' further forward/flush within the rad support in the bay? i know it would make things like opening the rad cap and things a hassle, but you could make a hole for it yes?
just a thought.