I have a 1991 mustang (worn down, bent frame, rusty)... and want to buy a better condition pre-modded (read: supercharger or bigger engine) mustang of body style 1987-1993.
I know there are a few differences like from 1990 and up there was Mass air metering or something... but can't remember all the differences (or very accurately

)
is it worth getting a 1987-1990 mustang? or should I mainly be looking in the 1990-1993 range?
sorry if I am an idiot
Thanks
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'91 AOD LX Hatch 150k+ miles: 1 5/8 Unequal Shorty Headers, Hi-flow H-pipe with Cats, weld-in 3 chamber Flowmaster mufflers, K&N filter with silencer removed, Summit Subframe connectors (huge difference), Ford Racing 3.73 rear-end (amazing), 180* thermostat, Summit Aluminum radiator (very cold)