I'm in the process of converting my 77 CJ from the stock 1bbl carb to MPFI. I got the intake manifold off today, and as I expected, the new intake does not mate with the old exhaust manifold, so I'm going to order a set of headers and start working on the rest of it next week. I'll post some pictures of the project as I go along. Here's my Jeep: It's a 77 CJ7 with a 258 inline six. Everything is basically original and it has 90,000 original miles. This is the engine: And here is the new intake manifold: Basically what I am doing is taking a stock Mopar MPFI manifold with stock injectors, I will also be using the stock throttle body from that setup as well. I've got my wire harness built already, I'll post pictures of that as well. I am using a GM 1227730 batch-fire speed density ECM with TPS, IAC, MAP sensor, O2 Sensor and ECT sensor. I will be building a custom HEI distributor, locking out the mechanical and vacuum advance and installing a GM EFI module, so the ECM will control spark advance and fuel delivery. I have a new gas tank with a 75 psi in-tank fuel pump as well. Since I'm running headers, I will be using a heated O2 sensor, which will be installed in the collector on one side of the headers. Can't wait to get this bitch out on the trails. I took her out last year with just the 1bbl carb and she did alright, but this MPFI system will probably bump me up from 90hp to 150hp. Over the winter, I plan to rip the body off and install a new one that I bought from an 84 YJ. Within the next two years I'm going to take the 258 out and install a twin turbo tuned port 383 SBC stroker behind a 700R4.