Any cluster should work, however the 90-93 ones have an airbag light at the bottom right of the speedometer (only visible with the light on obviously). Just check the tach for any adjustment. I remember at least the 79-82 had a slot for 4, 6, or 8 cylinder cars.
The 140 MPH speedo started in early 1989, if you had one produced in late 88, still had the 85 MPH. Mine is 3/1989 and its 140. Btw, the pony emblem on the dash didn't show up unil 4/1989, wish mine had it. Cute critters Dana, too bad for the irresponsible owners that gave the breed a bad rep.
Scarlet red 1989 LX 5.0 sport, ragtop T-5, 53k, 2nd owner of 19 years...original survivor, only exhaust mods...
1990 Strawberry red 1990 LX hatch, 2.3 A4LD (for now)...Original survivor, 134k...father son project