'70 Dart 392 Project; what direction?

This is the bulkhead connect I ordered, I haven't counted out how many wires I'll be pushing through to the engine bay but I almost ordered 2 to be safe.
Weather Pack Bulkhead Connector Kit

That's almost exactly where I want to run my bulkhead connector but alas I ended up running my coolant hose bulkhead connectors right there! I'll probably run towards the passengers side.

SOLID advice on the grounds! I've got battery in the truck with negative lead going through trunk pan to the frame rail. Planning on running another ground cable up along passengers side as a ground "lug" for the EFI system. I've currently have two grounds from my block to the frame rail but that's it currently for the engine bay. I also have a ground wire going from battery to underdash column. Haven't mapped out any extras at this point.

I do have the spark modules from DIY as well as the "Grey" and "White" wiring harness bundles. Honestly running wires and connecting terminals I kind of enjoy on projects like this where you have good diagrams to follow. The painless wiring kit was a nightmare sorting through factory wiring diagrams and cross referencing over to the new system....

Next week should be the week I start laying wires out. I'll have fittings to finish HVAC/Heat and start on EFI.

After that I damn near think I'm ready to crank??? Have to build an exhaust yet but I figured open headers wouldn't hurt first time or two :)

Mike @ HCA
22 pins won't be enough for the engine. Mine is a 47 pin and I'm using 42 of them. Now, I am overkill on the power for the coils and injectors. I ran an individual power wire for right bank injectors, right bank coils, left bank injectors, left bank coils. You could just use one power feed for all injectors and another for all coils. I separated them for a "failsafe". If for whatever reason I blow a fuse, the engine will run on half of the cylinders and get me somewhere off the road. I also have redundant sensors for oil and water. One set if for the ECU, the other is for my analog gauges. Basically, you can trim down easily from what I have, but 22 pins isn't enough.

I'd also suggest making a spreadsheet to keep your wiring colors/position in order. This makes pinout into the connector much easier, and you can go back and ring everything out with an ohmmeter when you're done to confirm you didn't make a mistake.