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175 Posts
Discussion Starter · #1 ·
ok heres the deal
i just picked up a 89 4 door lx, i have a 91 si motor and tranny and computer in my garage collecting dust also some stock parts for my 93si
im going to install the 91 si motor in the 89 4door now heres the question can i use my stock intake manifold and stock header from my 93si on the 91 motor and if i can will there be a performance boost?
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