I have vinyl stripes on my 89 They have been on for almost a year & still look good. I recomend buying from these guys...
http://www.colebrothers.com/graphics/stripes.html Its the best price for quality decals. Mine are 12inch wide with a 2 inch gap. I didn't go over the bumpers because I wasn't sure how to get arround the cobra grille.
Front
http://www.geocities.com/dadngt/Work...tanglehigh.JPG
Back
http://www.geocities.com/dadngt/Work...kanglehigh.JPG
Before stripes
http://www.geocities.com/dadngt/GTshots/stang.JPG
I would like to change to red stripes, white wheels,& red rocker stripes with GT 5.0 (like the old GT 500 stripes)
Those 2 pictures posted are good looking cars. Now you can deside if you want stripes to the ground or to the bumpers. Good luck & get some pictures of before & after