That shows it fits a different shock than what is on the 96, unless the gas and electric models were fitted with different shocks. My gas 96 DS has a threaded stud on the chassis side and an eyelet on the axle side. According to the 2nd picture, that lift only works with shocks that are threaded studs on both ends.
I ended up going with a 4" jakes lift, and it worked fine for my 96.
https://www.jakesliftkits.com/liftki...982-1996)/7464