1: I have a SOHC turbo manifold that i need to fit my B18, and i have a b18 manifold spare, is it really as simple as cut the flages off and weld the B18 to the SOHC manifold or is there a difference in the gaps between them ect?

2: to fit my turbo i need to tap into my sump, how to do this? drill a hole and weld a bolt around it?

 

spacing is different between d and b series exhaust ports. why not just use the spare b18 mani?

 

i dont get what u mean?

i need a turbo manifold, for my turbo to fit on