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What are you planning on doing with GC: offroad or onroad?
I lifted mine (BB) to accomodate 31" tires. I put the DT 8000's, and they ride pretty stiff. A little too stiff for my liking, but then again, I'm on a limited budget- damn school costs.
The Ranchos are nice, but it all depends on how much off roading you do. Mine work great off road, but on road, they basically suck. If you're on road, I would go with something more economical like Monroes. But if you have the money, go with the adjustability.
97' GC Limited stock with many parts on the way