Is it possible to add rear defrost to a 94 GT convertable. I know that I would have to change the top( mine is ragged) for one with a defrost window(or just the window if my top was nice), install the rear defrost switch on the dash. Is there already factory wiring behind the dash for this option??? Is it worth it? Expensive?? If anybody has done this let me know!

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66 Candyapple Red coupe
302 w/ 351 heads ported C6 auto (yes, made it fit!)
BIG hydraulic roller cam, roller rockers
working on the B&M blower right now
Hoping for an E2 kit one day!!!