S/T trucks and G-bodies have the same crappy brakes pulled from the same crappy OE parts bin.
With that said, S-10 warehouse on Ebay sells 1998-2004 Blazer dual piston assemblies from the 2WD blazers. That adds a ton of extra braking. If you can find one in a local salvage yard for less than $200 get them.
I may clone an F-body 1LE brake setup with one of my trucks if I dont go with the dual piston brakes.
Joe's tall spindle swap is an easy fix as well.
SSBC makes a 12" rotor and 4-piston caliper setup for the F/S/T/G bodies that is a bolt-in. Wilwood, Tilton, and JFZ have bolt-in parts, however these are generally for the racing world, so they are sold as individual parts and not a complete kit (all the stuff is in the catalogs)
There is also an F-body kit to run Gen 4 brakes on the Gen 3 cars which would work with minor modifications.
Where in WI are you located, I can point you to a few salvage yards.
