I did a mock-up on the vortech before I install the engine and then install it permanently. Problem is the pass. side FMS shorty header, that came on my donor engine, hits right on the vortech cast bracket by the smog pump mounting lug. I'm considering hacking it down on a bandsaw, but what if NH tells me I need the smog pump????? Using Breeze's kit to move the alt. to the drivers side, which works very well and looks clean.