I plan on getting a 2002 LB7 Duramax Crew cab short bed...if I get a super lift 6-7.5" suspension lift and set the front to 7.5 would i be able to add a 1-1.5" add a leaf to it will it sit even from front to back and will the cv angles be close to correct? and will i be able to run 37's...if so will i need to change the gear ratio? if anyone can help me i would greatly appreciate it, thank you