[FireSale]

The NHRA allowed part is a bit deceiving. This is what the 2017 book says for Stock:

BRAKES
Must be equipped with stock production four-wheel hydraulic
brake system, or aftermarket disc brakes meeting the following
criteria:
1. Minimum effective piston area per wheel: 3 1/2 square inches.
2. Minimum disc (rotor) diameter 10 1/4 inches x 5/16-inch thick.
3. Must install dual master cylinder with any modified brake
system, splitting front and rear into separate systems.
4. Dual calipers on rear wheels permitted, maximum one
hydraulic brake line to dual rear brake system (no wires).
5. Rear wheel line-loc prohibited; front wheel line-loc permitted.
Parking brake optional.
6. Carbon-fiber brake rotors prohibited.
See General Regulations 3:1.

As far as spindles go. Stock.