Hoosier slicks seem to be good, see the embedded video in this thread.
sit-shotgun-t504509.html
I believe Pezi's truck is on stock suspension (stock leaf springs w/lowering blocks, cranked down torsion bars, KYB monomax shocks) with the addition of the Hoosier racing tires. He added camber to the front suspension somehow. He also has a stripped interior which helps with the weight.
Look at how good one of these trucks can handle. Pezi's truck holds the road on stock suspension with leaf springs! It doesn't even have rack and pinion steering. Sure, it is lowered some, but it isn't 4-linked, or airbagged. It is tricked; but it is still a simple, small truck, much of it the way it came from the factory.