Well for rotors it's not bad the front rotors off a chevy 4X4 front end will work.
Drive the 1/2 inch studs out tap them 9/19.
Make the appropriate bushings and bolt them on the back of the hub.
That's the easy part.
the caliper mounting bracket is a bit trickier.
Ford 250 wheels work good.the original wheels aren't big enough to fit over the rotor and caliper.
The 51 has been on the back burner for a while so only have one bracket