Can't help w/ the production # thing, but here is a link to a Brochure for your car on ebay...
1996 FORD MUSTANG brochure GT CONVERTIBLE
Welcome to the forum!
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Travis
T-Bones 1997 Cobra#6342 born 6-11-97
Wht/blk, Pro 5.0,FRPP 4.56's, aluminum driveshaft, FRPP throttle body, C&L 80mm MAF, K&N, Steeda U/D pulleys, Steeda timing adjuster, Borla cat-back, BBK cat H-pipe, SFC's, FRPP pro springs, BBK caster/cambers.
Best 1/8 E.T.-8.983 on street tires