Nexus - I run a 35 or 36 pinion with a 96 spur with a Reedy 19 Quad. This is with the rear tires around 1.80". My Hyperdrive Pro 12 comes with IRS rear pod plates and that lets me run the rear tires down to skins

The hot Reedy 19T setup for 1/12th is the EA F-Brush with a 3/32" hole 3/32" deep and Trinity green springs (6.0 on fiddle stick) on both sides.

For sedan the setup is the same but run the stiffest springs you can find. Paradigm Black Xtra Heavy are really good.