Thanks guys,
I will be aiming for 300at the treads i did a head gasket in it and im pulling the engine out and giving her some forgies ive got a bigger hyper gear turbo for her and some nismo injectors and going to put tomei cams in it.
The main reason i want to get rid of the cross over is the space issue it looks neater and the pipes dont pass the engine twice the less pipe and bends the better.