NOTES:Â The HP10002 Kits fit with the 3349 and 3319 superglide 5th wheel rail kits on 4WD vehicles. For 2006-2018 Dodge RAM 3500 (2WD/4WD) Chassis Cab, the HP10136 must be purchased and for 2019-2020 Dodge RAM 3500 (2WD/4WD) Chassis Cab, the HP10349 must be purchased for vehicles that have a round axle tube with the breather located approximately 7'' from the spring pack.