you should be able to tell if they'll interchange from info in your shop manual, but not much point in having a terrible ride empty so you can carry more weight occassionally - check around at spring shops and find some overload leafs to install, keeps the trucks normal ride empty, supports the extra weight when necessary .... and make sure the back shocks are HD

my long 1/2T has overloads and it carries over 2000# of apples during harvest time with no problem

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics