it is a custom made one...my buddy and i built it for the car...
this is my buddies website:
http://www.bftcustoms.com/
if you question any of the welding ability of use here is his truck...he did everything from rearching the springs to all the fab work...his dad has a metal shop in a polebarn in the backyard
oh and yes it still has 4 wheel drive unlike most trucks this big...and those are 53in tires