How much of an advantage would 4.70....or a dual case be for me. I've got the 3.4L (and considering putting a blower on too)...so, power isn't my issue. And, I've never been in a situation where I couldn't go slow enough. Would it really be worth putting 4.70 gears or getting a dual case?

'93 4Runner - 3.4L 5VZ-FE, 2" body lift, on-board-air system, custom gauge cluster, rear e-locker, electric fan, custom built front and rear bumpers, sliders, 4,88 gears...all on 33x12.5's.