Need wiring harness for EFI Magnum

I'm looking at following much the same path that you did. I want to get it going first, then start with the upgrades and improvements. Adding power steering is part of phase 1, phase 2 is probably OBD2 and add AC.

Phase 3 is the OD trans. The Mopar RH automatics are probably the easiest way to go, but I'm not against the idea of using a GM trans or a Gear Vendor unit. I've heard about a lot of people having success with the 2004r, so it will be on my list of options. The GV unit doesn't have a very aggressive ratio and if I'm going OD, I wan't some serious OD. If you don't mind my asking, do you remember what the 2004r ended up costing all in?

I love that air filter housing you have. Where did you get it? I'm looking for something similar that I could plumb right into the scoops on my hood (70 Swinger - check my avatar).

Thanks for the advice and recommendations. When the time comes I'll certainly look into those guys.

Thank you. The overdrive is the single best thing I did to my A-Body, followed by EFI and BBP 4 wheel discs.

I found the 2004R was easier to install because of the bolt on bellhousing and you don't have to cut the floor pan to get proper driveline to rear end pinion relationship. It also takes less power to spin, has better gear ratios and it performance is awesome when built properly. I opted for a 3800 rpm stall, lock-up torque converter option, which essentially makes it feel like a 5 speed overdrive

Either way you will need to modify the torsion bar cross member for clearance and fab or buy a new cross member for the rear trans mount. The RH requires you also modify the floor pan.

The air cleaner is from a guy in Canada. You will need to fabricate a sealed platform from the air cleaner to the hood, which shouldn't be that hard.

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