'70 Dart 392 Project; what direction?

Another update. Had numerous small problems as you always do with a new build.
Installed the new 600cc hellcat injectors and things are much better initially.

The Holley oil pan just would not seal and kept leaking oil. Not a terrible leak but unacceptable. Changed out the break in oil and dropped the pan and reinforced their O-ring gasket with a liberal amount of black RTV. Also had to helicoil one of their oil pan holes on the aluminum front cover. Replaced the bolts with a true grade 5 bolt as well as the threads stretched on another one with fairly minimal tightening.

I was having an issue with 2nd gear. With easy driving around the block the trans shifted like butter. Very very smooth. However if I accelerated hard in 1st, it would hit a WALL going into 2nd gear. No grinding, no weird noises. Just a hard wall. If I shifted to 4th and back to 2nd it would fall in. Was a little nervous about this one but found a post on FBBO where the guy had the same issue and the ball on the reverse detent had fallen out. I popped the cover off the trans and sure enough no detent ball. Fished around in the bottom with a magnet and bingo found it! Got it back in and reverse actually engages much more solidly now and I dont' anticipate the 2nd gear issue. I believe the reverse lever was getting pushed back under hard acceleration and blocking off 2nd gear somehow.

EFI tuning update: Got things working OK for now. I was focused too much on the IAC allowed movements and not the warm up cycles. Playing with it and it's getting better.

Hot starts were not cooperating. Lots of cranking. Trying to sort this out. Fuel pressure was bleeding off almost immediately after initial prime, installed a check valve back near the fuel tank and it's holding much better but still bleeds off in 5-10 seconds now rather than 1 second like it was doing prior.

Got timing and VE table tuned a bit to where it recovers fairly decent after revving up, but when under a slight load like backing out of the shop it's bogging down, I believe it's too rich in that area of the VE table but I need someone there to help me with it.

Also, I have a weird lean bank issue. Drivers side exhaust pipe past the collector shows more heat discoloration than the passenger side, so I don't think my O2 sensors are misreading. It "seems" to be more consistent when it's cool but after a few hours of playing with idle settings the drivers side leans out. Need to dig into this one.

Car is going to my buddies shop on Monday for glass/interior/carpet/headliner work and I"m going to take a few weeks off from working on the car. It's been great to get it this far, and the car absolutely rips down the road and the 315 tires hook up fantastically.

Got the exhaust all fabbed up and it looks great. I'll follow up with some pictures. Wasn't near as hard as I thought it would be to route the dual 3" pipes up over the rear axle and outside the relocated leaf springs.

Mike