In order to replace a 5spd with a automatic. and want to do it right you will need to use parts from a pre 96 .you will need flex plate w/spacer for end of crank shaft,rear drive line,shifter assy.w/cables .there is also a shift lock on ignition switch,brake pedal assy.,wire loom, ecm[brain],kick down linkage on throttle body kickdown cable,interior shift consule.
shifter hole in floor will have to be slightly modified ,gear ratio in 5spd. is 5:12 auto 4:63
my suggestion is to sell your 5spd. vehicle and get an automatic.