I have a 1971 Bronco Sport, Frame Up rebuild. It has the N.P. 435 transmission, 302 engine, 31" tires, 2 inch suspension lift, and a 1 inch body lift. I have installed a new wiring harness, (after nearly burning it down on my way up to the Mary Murphy Mine in Colorado. Then had to be towed back to camp by a J#@p!!!). I would like to install EFI. I bought a 1989 Crown Vic, (sister borrowed it for 7 years, still runs great, so I hear). It has a 5.0 speed density engine and learned that Ron Francis can make a wire harness for it, for about $550.00. I am not wanting a hot rod, or wanting to hop it up, I just want it to be reliable. Will the speed density work well at high altitude and sea level? Can I swap the EFI stuff from the Crown Vic engine on to my Bronco 302? Also, the car has an automatic transmission and the bronco is a standard. Will this cause a problem? Would like any and all advice and comments.