For the fronts, I ordered and put in progressive springs...HUGE POSITIVE DIFF., no sag, better ride by far! In the rear I put in progressive 442s and lowered it 1.5 inches....MUCH better!!!! I would do shocks, not lowering bolts in the back...you will be a happy boy...Good luck. Front springs were 75 bucks and the rears 380 bucks at dennis kirk. 1 hour to install fronts, 2 hours for rear...plus beer.