For the T-bars , I replaced mine during the lifting process, easy. I did nothing to the front mounts on the a-arms. All I did was release all weight and load from the t-bars and slid them back a tad(enough to get out of the a-arm mounts) through the cam,then push em back through the front of the cam crossmember.
As for the AAL's I have AC(Rancho) and have had no problems. I installed them via Mosis' instructions on PNWX. Without a doubt the multi leaf AAL's are probably better.