rwd guys take a lot of short cuts.. cant tell ya how many bov's i've seen on hot pipes running open with draw through mafs lol
it might be ok to do, but you really shouldnt need to make so much room, look at my pics man, my manifold is crammed in there pretty good but i didnt have to sacrifice any of that stuff..
iirc your already going to run a half radiator, which i wouldnt do either, but how much room do these guys need?