i have a 99 4runner limited 4x4, i have the air lift 1000 air bags in the rear coils for help when im towing my 4wheeler. and i wanted to purchase the performance products lift springs with the bilstein shocks, i was wondering if there was going to be a problem with the air bags being to small or just not working with a lift. has anyone used the air bags with a lift before? thanks in advance for your help.