According to a picture in Mustangs Unlimited
the stripe dimensions for the Shelby LeMans stripes are as follows.From front to back on the car, starting at the bottom edge of the front valance, the stripes are 9 1/4" wide going up to the front edge of the hood.
At the edge of the cowl panel where it meets the bottom edge of the front glass, the stripes widen to 10 1/2"
At the front edge of the roof the stripes are 10 1/2" and narrow to 10 3/8" at the back edge of the roof.
At the bottom edge of the rear glass the stripes are 10 1/8" and narrow to 10" at the back edge of the deck lid and continue on down to the rear valance at the same width.
I hope this first is correct and if so, I hope it helps.
Lennie
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68 Resto Mod Project
289, C9OX Intake w/351 Heads, T-5, 9" w/3.89