Originally Posted by myother4x4isaCJ7
I think your talking about a browny box. Those are great and I believe can even be had with overdrive so you could have a low/direct/Overdrive the only downside is they are big/heavy and arenít synchronized. Iím fairly certain they come in 2, 3 and 4 speeds.
My dad runs a browny box in a 1 ton Chevy service truck he has. I have contemplated putting one in my truck