Ramcharger exhaust 2-1/4 duals or single 3"

I thought I’d share another hack we use on our 4x4s involving the front axle. Being that it’s only being used when we are in low enough traction to actually need it, we usually either run a mini spool or Lincoln Locker in the front diff. The vacuum actuator ( we swap to aftermarket cable actuators for reliability) on the CAD provides open differential when the hubs are locked. But when you actually need four wheel drive, that locked front axle will pull you places you that make everybody wonder what makes your rig work so well. And for a whole lot less than putting a locking differential in.