on american muscle they have the same wheel listed twice, the link I gave and then again under 94-04 section. Same specs, same part # but here's the kicker, the listing for the fox mustang is $109 ea, the listing for the sn's is $169.
The '87-'93 wheels are cheaper because they're marked as being on clearance. They have the exact same backspace and offset as the '94-'98 wheels. They have a 9" wide version listed in the '94-'98 section. You could put a pair of those on the rear if you decide to go this route. I don't think they'd look that bad.
Yeah? Everyone is recommending the 270 tires and such. Gear banger 101 even a 255 wouldn't be enough tire for a 9" wheel said something to the fact that the wheel would stick out further than the and not do well against road hazards and curbs etc etc