I have a RC 2013 Ram Express 4X4 (same as pic, bought it new) that I had to rebuild because of a lifter failure at 187,000 and I did many upgrades and have been contemplating a 6.4 or even a used 6.2 just because.
I am in aww of what you have built, that thing is just BAD ASS!!!
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Thanks!
When the TRX was a go, like many others I ordered mine. They had a lousy and slow rollout so I had some time to think about it and ended up canceling the order. I've always had RC SWB 1500 Dodges/Rams since 1978 with my first purchase. It was a 1978 Lil Red Express Truck and I've been hooked on Mopars every since.
Advance Fiberglass came out with an 8" TRX wide body kit and that's when I knew what I wanted to do. I purchased a Whipple Super Charger kit, SW complete exhaust system and a 5.7 crate engine. From there it got expensive. I basically gutted the engine and went back with high end parts to include Hellcat items. At the time there wasn't a simple solution for just getting a drop in 6.2. When my 5.7 failed after 45K miles I started looking for options and found a solution for at least half the price I had dumped into the 5.7.
I'll know here pretty quickly if this all goes together as expected. When you order the Hellcat or Demon long blocks, they come with intake adapter plates and have dip stick hole for car or truck application. From there everything off the 5.7 fits. NA or FI, you just need it tuned. I'm excited about the demon LB, spec's show that it's the Mac Daddy when it comes to durability. It should easily hold up to the 10.5 of boost with room to grow. I’m now looking at 8HP70 upgrades that will handle 1000+ HP so I can take full advantage of the 6.2.
Best of luck with your build!