hmmm, I wasn't even thinking about what could happen with a stripe on the back of a `79 with the big window taking up most of the rear
here is a `79 with just the raised cowl of the hood painted
tho if you look, its got a later `80~`82 rear bumper cover
...personally I like the slopped 'soft tail' of the `74~`79 cars...and at most if you have to have a rear spoiler to use a `78 Pace Car add on one(I believe also factory on some `79 cars)
is that the rear bumper you have on your car?
...or without the spoiler?
sometimes those spoilers can look OK painted with a accent color, but otherwise you don't have much room to carry the stripe to the back unless you go all they way down the rear bumper
funny one of the first Corvettes I fell in love with(I was 16 and it was in the Nov 1979 MotorTrend mag I subscribed to) was a `79 with a stripe
also Custom Image Corvettes is doing a rear bumper cover to have the look of early cars
just tossing any ideas out there