I am going to get the 6" basic kit with a 2" daystar spacer in the front and the 5" block and 2" aal in the rear. My question is can I fit the 355/60/20 Nitto Tera's and not have to regear, or should I stay with the 325/60/20's. Want to know the pro's and con's of going with the 2 sizes.
Thanks for the help.

 

If you run the 355's you should regear. That is about a 36.8x14 tire and your truck will be pretty sluggish. The 325 would be about the max without a regear but you wouldn't need the extra spacers or the large block on the rear either.

 

Stick with the 325's any bigger and you start really exponentially adding stress to the suspension (ball joints, etc.). You don't have to regear with these tires but i still would if i could! If you want that much lift have you looked into a "rize lift kit"? They come in 8" or 12" lifts" Hope that helps!

 

I agree.

 

get a Rize or CST and keep your factory angles.