FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: NFTPlease Login or Register to create posts and topics.Post History: NFTNFTUserProfilePost HistoryI have an '89 Chevrolet K1500 that I put a LM7 5.3 in. I used Gibson headers to 2.5 exhaust, F …In: 1989 K15006 years ago