I really havent looked at my truck,but i think it has a straight axel. Can you block these

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1991 RANGER 4X4 4.0
3'' LIFT,CB

Front, no. Back, yes. If by block you mean longer u bolts and a block between the axle and the spring, yes. I recall a different post saying you're going for a trail rig, if you want durability I suggest skipping the block.

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'88 STX Super Cab 4x4
2.9 5spd 180,000 miles
Crappy Paint, Worn Parts,
Fix'em as they Break
when Nowhere is Now Here