differnce in 1996 front axle and 1999 tahoe front axle...both 4x4 and obs. is there any??? i need to know because i just picked up my procomp 6" lift and he gave me the COMPLETE! front end all attached...lol. im hoping to just take mine out and put this in without unbolting everything. then all mine will be for sale hub to hub with all arms and axle complete. thanks