sounds like a automatic 85. 86 has the normal efi setup and 85 with a 5spd have a 4bbl. Aslong as you get all the wiring and related components to go with it it should be a fairly straight forward swap.
'04 Roush F150 ( totalled while parked
'89 Gt Hatchback H/C/I, 1.6 rockers, 75mm maf, 24lb, 70mm tb, cai, udp, full exhaust, msd ignition, 373s, Eibach Springs, Lakewood 50/50 rears, Adj Rear Control arms, A/C Delete, Smog Delete, EGR Delete,