You've done great. Only things I'd look into other than you've deduced:
-main caps
-deeper wheel studs for slicks/simple mod to do while the assembly is out
-stainless brake lines for the rear
-possibly a line lock if you drag race a lot
-definitely the ftbr fuel filter relocation kit, and checking the fuel filter for sure irregardless if you relocate it or not. It's a bitch to get to...
-rear brake system may need pads rotors et al, easy to do off the car.
Anyways you've done awesome man, 3.73's, ftbr, ford racing cover, jeez. I literally have the same stuff, and mine did phenomenal at 920wtq. The t56 blew apart to bits though haha.
-main caps
-deeper wheel studs for slicks/simple mod to do while the assembly is out
-stainless brake lines for the rear
-possibly a line lock if you drag race a lot
-definitely the ftbr fuel filter relocation kit, and checking the fuel filter for sure irregardless if you relocate it or not. It's a bitch to get to...
-rear brake system may need pads rotors et al, easy to do off the car.
Anyways you've done awesome man, 3.73's, ftbr, ford racing cover, jeez. I literally have the same stuff, and mine did phenomenal at 920wtq. The t56 blew apart to bits though haha.