Can you use OEM parts to get 6 lug front disc brakes?

[Matt300ZXT]

I know you can get Speedways kit to use stock calipers and rotors from later model GM cars to make your AD truck a front disc brake truck, but can you piece together OEM parts like that but still have 6 lug? Does someone make a bracket that allows you to use the same caliper as the other kits, but with a 6 lug rotor or something? The reason I ask if I may keep it 6 lug as I may not have the money to convert to a later model rear which already has 5 lug axles on it, and I don't want mismatched lug patterns just to get front disc.