Brakes for towing

[94K3500PROJECT]

You don't need GMT-800 parts for that swap. Some of the late GMT-600 (thru 2002 Express) vans used the bigger brakes on the SRW, so those rotors would work for a 2wd. On a 4wd, just get the DRW rotors. Also some of the SRW extended cab trucks used the bigger brakes, according to listings I've seen on Rockauto.

I've got the DRW brakes on the front of my K3500. If I ever rebuild the rears, I've got the bigger wheel cylinders to complete the job....friction parts on the rear are otherwise the same between the SRW and DRW, the DRW drums are only different to physically mount the wheels.

I was saying you need the gmt800 parts of doing that whole swap and that stock gmt400 DRW rotors and stock gmt800 rotors are essentially the same size. All you gain so far as rotors is a slip over rotor (which is nice but not any sort of performance upgrade)