Since I don't know the specifics of your "goodies" I'll just assume to have some well matched components if you are going to be putting out near 500 hp/torque. A 428 of that caliber would work spankingly well with the Blue Thunder, and like Rob said, you'd have a better top end then with the rpm. The 1400 stall sounds a bit low to me too, and while a 2500 stall would probably work better with that engines power curve, it depends on what you want to do with the truck. Unless you enjoy launching hard from every stop, and blasting through the slammed civic in front of you (not that that would be a bad thing) you may have to stick with the lower converter for streetability. I was surprised to hear that this BT intake was gentle on the low end of only mildly built FEs, but then, Rob does know a heck of allot more about these things then me (he posts a bit on the other boards as well). And yea, CJ valves ARE always a good thing :P