Hey guys I have a question.  My truck has the option to install the front shocks inside the coil springs or on the side of the coil springs.  Which is the preferred method please?

In side the springs is how mine install. I have no way to mount them outside. It did not come from the factory like that. As far as any advantages  to being outside, I would not know.

Yours must be a 2wd. Outside would easier to change in future, and depending on location of pivot point you may get more or less travel. 

Its a 2001 4x4 Cummins

Sounds like someone made a modifacation to yours. 

My 99 Cummins has a Skyjacker lift in the front with quad shocks - one pair inside the coil springs like from the factory, and the 2nd pair are mounted to the lift and run down behind the coil springs.

sounds like an aftermarket coil bucket mount...for dual shocks ( a bad thing, if stiff shocks are chosen)

 

the factory setup is in coil.