OK so im doing a motor (RB30e+t) and turbo conversion into a Datsun Z, motor is in but im going to run a forward facing intake plenium. What i want to know is do i have to run all the coolant lines in and around the plenium? or can i just leave them off? IMHO it looks messy and i know they used to run them on the Z's but everyone disconnected em. Do they have to stay?
cheers
glen