Here's my 360 combo what do u think?

"What do I think" s the title of the thread. So here is my take for a IMO, improvement.

Change the following parts;

Strip Dominator for a RPM
Low numerical gears for higher ones like 3.73's
Exhaust pipe size to 2-1/2

The Strip Dominator should be seeing nearly twice the cam duration in a vehicle half the weight.
The gear ratio isn't allowing a decent torque release.
The exhaust pipe size is choking power pretty good.

What stall converter is in use?
Truck weight?