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   That sounds great. For trail blazing if you don’t have a Limited Slip Differential it should be on top of your modification list. When you are driving and the trucks suspension is double off camber you will only have ONE wheel driving and it will be the one with the least amount of traction! A rear limited slip differential out of a 99 Frontier 4x4 like mine is a very good choice. It has a good off road gear ratio and an LSD.

   Large tires will hurt the crawl ratio and you’ll need that at times. A one inch lift will clear BFG KO 31x10.50x15s All terrains. These BFG tires have tough sidewalls but perhaps you don’t have sharp rocks like are in the Colorado Rockies.

Have a good one.. Don S..

The differential gear ratio in my 99 4x4 is 4.62 and that is better on the trail...

I think there is a major different in the early Frontier suspensions. Mainly that the rear axle is mounted spring under on 2wd and spring over on the 4x4s. Check that and keep in in mind as you read what I did to my 4x4 to lift it for clearance of the 31x10.50 x15 tires.

The front suspension is Torsion Bars. I measured the height of the fenders on both sides. Then adjusted the Torsion Bars for a 5/8 inch lift. The adjustment is made at the rear of the bars and don’t forget the lock nuts.

The rear axle on my 4x4 is under the leaf springs and I added one inch lift/lowering blocks (from Pep Boys) between the spring and axle. The problem was I had to have specially shaped new longer ’U-bolts’ made at a spring shop.

This lift made the rear of the truck just a little higher than the front but that is desirable because the rear needs more ground clearance than the front. Next I removed the rear bumper for more ground clearance and made a trailer hitch to protect the rear sheet metal.

So look at your rear end first… and the one under the truck… Don S..