Thanks for all the good info and advice so far. The only other info that i can think of is weight is 4240 lbs with driver. Rear gears will be 3.23 for street/highway trips, and 3.91 for track. 8-3/4 rear. I will be running drag radials 28 “ tall.
Only actual numbers i have are dyno numbers. They are as follows:

Rpm. Tq. Hp
3900. 609.7. 452.7
4000. 608.3. 463.3
4100. 610.6. 476.7
4200. 613.1. 490.3
4300. 621.1. 508.5
4400. 625.5. 524.1
4500. * 629.6. 539.5
4600. 628.6. 550.6
4700. 625.4. 559.7
4800. 622.0. 568.4
4900. 619.1. 577.6
5000. 616.3. 586.8
5100. 611.7. 594.0
5200. 605.8. 599.8
5300. 599.4. 604.9
5400. 592.6. 609.3
5500. 581.4. 608.8
5600. 571.2. 609.0
5700. 561.3. 609.2. *
5800. 550.7. 608.2
5900. 540.3. 607.0
6000. 531.3. 607.0
6100. 515.7. 600.6

Avg. 602.07. 559.43

So, peak torque is at 4500 rpm. Does that chang anything? I guess for strictly racing, i woukd want a 4500 stall, but for combo driving, what woukd you guys be looking for? Aside from calling and having one built, or my 10” adjusted. I will do that, but trying to understand the fundamentals and theory of it.
If i can think of any other info, ill add it