440 for my RamCharger

That should definitely get it moving along. Are you using an NP435 Geometric transmission 6.68:1 first with 50% splits) or the NP445 close ratio (4.56 first with progressive splits) If it’s a primarily road going vehicle, the 445 would make it surprisingly quick.
For now it’s the 445. Eventually I want to get a Tremec TR4050 though.