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I started with a kit I bought from the people at mass-air.com (website is still there, but not sure they are still in business). Don't remember how much it was, but it wasn't cheap. I the end, the only thing from that kit I am still using is the harness, although I had to change the length of pretty much every wire on it to make it look clean--they made all the wires extra long to make it universal. Now that I have the wiring diagram and know what to do, I could do it a lot cheaper making my own harness and buying the MAF meter, and doing the plumbing on my own. Getting ready to do just that to a 90 EB Bronco I am putting an EFI 460 and ZF 5-speed in out of an 89 F250.