Ok I have a 2000 silverado scsb, it already has a belltech 3/4 drop, a 2 inch drop spindle up front and a one inch drop spring up front, and out back it has both front and rear shackles and a c notch, I'm wanting to go down to a 5/7, I was thinking a belltech 3 inch drop spring up front and a belltech drop leaf spring, but I have some questions and I was hoping you guys could help me out, will my 275/40/20 tires rub?? I don't think they rub at all right now. Also what shock would you recommend for the front?? Should I use shock extenders for the rear? And what are some other problems I may run into?? Thank you guys and appreciate any feedback, here's a pic of how it sits now also (sorry if I missed a post on this stuff already)