Hi, I'm from the Philippines and I just registered on this forum. I'd appreciate if someone can help me on lowering my tahoe. I have a 2003 Tahoe LS 2WD and I just installed a 305/40/22. I also bought a McGaughy's (part no. 33048 which states that it lowers the front 2" with torsion keys and lowers the rear 3" with coil springs & shock extensions) in ebay. Do I need to buy additional parts aside from this item? Will it affect the ride? What about the safety? Thank you.