Re: How bad of an idea is this?
I've never wrapped a car so I might not be the most qualified to answer. But let's assume worst case for a minute, and there is a ton of rust (including some holes) in your roof after you remove your vinyl top. Wouldn't you have to either bondo over it or remove & replace any bad sheet metal? And if you were thinking about covering it up with bondo, would you paint over that later or would you plan on doing proper rust repair before you paint? To put it another way, why do the job twice, and if you're going to do it at all, why not just do it right, and if you're going to do it right, why even bother wrapping it in the first place?
That's my long answer. My short answer is if you want to wrap it that bad, go ahead and wrap it, but leave the vinyl top alone if you do.
'66 SS Clone
Fast Burn 385hp Crate 350 (for now)
Muncie M20 & 3.42 Posi
UMI Stage 2 Suspension all around