Remove Front Extension Pipe for Regular Cab with Standard Bed (8') 142")wheelbase vehicles Add Adapter 60691 for Extended Cab with Short Bed (6' 8") 148" wheelbase vehicles Add Adapter 60692 for Extended Cab with Standard Bed (8') 164" wheelbase vehicles Add Adapter 60693 for Crew Cab with Standard Bed (8') 176" wheelbase vehicle EXCEPT Vehicles with Dual Rear Wheels See below for Product Features & Benefits
