I realize this thead is aged but I thought I would include my opinion for the next person that is looking...
I bought into the 11.5 inch and also lowered the front end 2 inches with Race-Tech springs and emulators. By lowering the front down more than the back you get better fall into the corners... You probably won't want to lower it more than 2 however as the distance between the fender and the radiator is perfect at a 2 inch drop...:thumbs up:
The rear shocks are MUCH better than the stockers but I kind of wish I would have sprung for the 440's with I.A.S. technology. They were over double the price...:bang head:
See pic of my install. Oh I had the chrome stripped off of them and then powder coated them...:coolgleamA: