1998 12V Quad Cab 5-speed 3500 Posted on 04/28/2013 by BBDiesel Another happy customer today. We installed the following items. 98 12v Quad Cab 5-speed, Super B 66, Stage 4 DDPs, Southbend Dual Disk Clutch, 5in Straight System Rolling on 35in Truxus STS an Badlands. This is a very Nice Truck Tanner!