I am converting my '88 5.0 lx 5 spd. to mass air because the engine is rebuilt with aftermarket and performance parts. I want to try to avoid buying a brand new conversion kit because they are too expensive for what it seems like you can get a kit for or the parts of a kit for on e-bay . I know you need the processor, harness, and mass air sensor which has to be calibrated to your injectors (mine are 24lb). Aside from that I don't know much else. Does the processor have to match the harness? Do I get any mass air processor to go with any mass air harness and then buy a separate sensor already calibrated? What is the best way to go here. I hope someone can help me out. Thanks