RWherley
TDR MEMBER
I just replaced my vacuum booster with a hydro booster from a 98 ctd. the truck itself did not need any modification, the hydro booster needed only a small mod done to the mounting bracket so it bolts right into the factory vacuum booster mounting holes, all the hydraulic lines from the 98 switch right over with out any mods. For the brake lines all that is needed is to change the flare nuts from the 98 onto the lines of my 93. I used the vacuum manifold off the the booster to supply vacuum for the cruise control, exhaust brake, and HVAC system.