SBP to BBP swap questions

Front end... http://www.moparaction.com/Tech/archive/disc-main.html

You can use the FMJ spindles but still need a set of BBJ uppers or convert the SBJ uppers to big ball joint.

On the rear you can redrill the axles and drums or buy a set of aftermarkets for about $300 and then get a LBP set of drum brakes from backing plates out.