07 Tahoe, which leveling kit to get?

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Ok, the CCM ket seems like it isthe best bang for the buck, but what do you guys think of the welded steel vs. billet aluminum?

I assume that you're referring to the front spacers....??? The CCM welded spacer is extremely heavy duty....IIRC, CCM fabricated the spacer using significantly thicker sheetmetal (1/4" steel) than the flange on the OEM strut mount. As long as you go with a quality company like CCM, the welded spacer is MORE than adequate.