I've got a 300 Degree fuel rail with Nismo 740cc injectors. I believe my engine is out of a '90 Z - the lower intake manifold is stamped 30P. The engine was previously built by someone else so I have no idea if the lower plenum injector seats have been machined??? Which lower injector O-Rings do I need? I'm assuming the early version ('90 - 94 TT)? Should I be checking to see if the injector seats were machined? Does it matter?
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