Installed on my 2002 P32 chassis with 17k GVWR they make another kit for under 15500 GVWR P30/P32 chassis. All in all a good kit although the instructions could be a bit better, one of the long carriage bolts needs to be fitted before the bottom plate is placed onto the air spring, the instructions are not clear on this so I had to pull it back out. Axle and disassemble to install carriage bolt.