I already have a brand new steel 3/8" feed line that I installed a 6 AN compression fitting on that I've been running for awhile, I will buy a 1/4" steel stock return line and modify it the same way to make it look stock and easy. My 3/8" sender already has a return line port I plugged so that will be easy too. From the hard lines to the rails and Aeromotive fuel pressure regulator will be 6 AN braided lines and fittings. I will splice a high flow EFI pump somewhere along the main line powered by a relay. I will also be using at least 42 lb/hr injectors.
As for the ECU, I plan on building a Megasquirt unit for it. For the money they can't be beat and they have ridiculous amounts of support and modifications available to do anything the more expensive systems can and more. I will make my own harness for it. I'm actually helping my brother set up one on his soon to be turboed 04' Tiburon so I should be pretty experienced with it by the time I finish mine. I have to install it in parallel in a way that all of the emissions systems will be happy and not know we are controlling them, the Challenger will be cake.
For ignition I'll be using the locked out MSD distributor and coil controlled directly by the Megasquirt ECU for full timing and rev limiting too. Eventually I plan on going to a wasted spark coil pack system and ditching the distributor. I'd have to get a trigger wheel installed on my crank pulley and a bracket made for the sensor. I will cut down an old stock distributor to be used as a plug for the hole in the block.
Really the only thing I am not decided on is the throttle body to use. Some of them are crazy expensive and I don't have that kind of money to drop on them. So I am currently hunting around for one. I am also trying to find some kind of bulkhead connector to use at the firewall so I can disconnect it right there. My current wiring harness just goes through a grommet, which will be a PITA when I get the body work and paint done. I figure I will need a connector suitable for about 60 wires, anyone have any ideas?