i have a 4.5 skyjacker but i want to go bigger without getting a whole new lift. could i buy a 2" BB and use it with my 4.5?

 

Not sure what came with your kit, but you should consider:
Brakelines, SYE/driveshaft, Control arms/and angles, bigger tires=bigger axles, steering angles.
Other than that small stuff, yeah it will work.

 

brakelines im not too worried about, sye is a must. i have a d30 upfront with the chrysler 8.25 in the rear. i want to get better control arms eventually. thanks for the advice, wasnt sure if it was going to work or not!

 

This is sitting on a 4.5 lift and I added the 2 inch spacer up front with adjustable upper and lower arms. In the back I added 1.5 inch shackles and a 1 inch block. The steering angle is my main concern at the moment. It is at the point of full extension on level ground and will bind when flexed. 33x12.50x15 tires