1994 G20 Van spindles

[Awann99]

I have a 1994 G20 Chevy van with a known head gasket. It’s worth more in scrap then what I could ask it for. My question is, could I use the spindles on the front of the van for a disc brake conversion. If so could I also use any aftermarket brake booster and master cylinder. I really dislike the plastic MC from the 90’s Thanks. What else could I also rip apart on the van to upgrade the truck?
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[Average Joe]

I dont know about the spindles.

However, I would yank out the trans. Its most likly a 4l80E being as the donor is a 3/4 ton. A 4L60E would also be worth grabbing.

Id also keep the motor if its a 350. It should be a factory roller cam motor. At the very least grab the serpentine set up and all brackets. FYI 4.3 accessory drive is the same as the 5.7 IIRC.