My 1986 C10 has the crate 5.3L 460hp Jegs motor, 4L60E trans, 3400 stall Circle D converter, and 373 gears. Dynoed at 350hp at the rear wheels, before we had a driveshaft bending issue. The truck is a tire fryer and great on the highway.
I used the Corvette inline pump with the filter mounted before the pump, I should have put a secondary filter after the pump but I've had no issues. I have dual 86 tanks with the standard sending units, going to the standard GM dual tank valve and standard switch on the dash.
I went with McGaughys kit for my 86 Shortbed. Just make sure you verify your brakes size. They had heavy duty brakes and standard brakes. Heavy duty had a 1 1/4” thick rotors and the standard was 1” thick rotors. My truck has the 2.5” front and 4” rear. McGaughys.com