Gen 3 Hemi list input needed

You have a pretty good idea of the basics to get it done. Here's from my own experience:

The TTI headers fit well. I've used two inch primary tubes in an A Body. BUT, manual steering box only. I have used the 1 3/4 tubes as well. They look as though the Borgeson box would fit. I have tried appropriate exhaust manifolds with factory power box, NO BUENO. Again A-Body.

Any of the new pumps likely have too much pressure for stock boxes. Bouchillon makes a revamped pump with appropriate pressures for stock boxes.

The TTI engine mounts work great. They truly make it "bolt in". On A Bodies you'll have to use the filter relocation.

Most of the aftermarket cams for Eagle 5.7 and 6.4 stuff disable the VVT function. You would learn quickly what valve to piston clash is otherwise. You will need to mechanically lock the phaser out.

I don't have any experience with the Holley electronic systems for the gen 3. I have used the Hotwireauto harnesses and computers with great success. You could send in the donor computer to have it unlocked. They have great tech support.

The transmissions can get tricky. Well, not really tricky, just a lot to think about. For the 545, all you would need from donor is computer. A Nag trans, you need the shifter, trans module, ABS/wheel speed sensors, main pcm, and possibly body control module from the donor. It's a lot. The 8 speed has support from Sound German Engineering with a stand alone kit. Surgery required on tunnel for A-Body.

6.4 car A/C is mounted low. Only issue I see with the truck 5.7 is the upward facing throttle body. No clearance for intake tubing/filter.