XYFalcon said:
If you're talking about fitting a factory style sliding sunroof, which when closed looks like there was no sunroof there at all, then go for your life. I'd love to find a factory sliding sunroof from an XY GT and fit it to my car in the long run, but I think the cost would be just too great to justify.
I'f you're talking about those cheap and nasty K-Mart performance clear glass pop-up ones that became so popular during the 80's, where just about every cheap lamo wanna-be street machiner hacked up their ride to install, I'd advise against it....
The internal sliders cost way too much, especially relative to the car's value. I've seen some that sit on rails on the top that aren't too bad and look like they'd seal ok, and they might be a candidate if they do.
I agree entirely with what you say about the '80's crap, which is what I had in mind when I was referring to leaks and perishing. The things weren't used during winter and the perspx lid welded to the seal and damage it the first time they were pulled up in summer. Plus a lot of the fittings were crap, partly because fitters and DIYers cut holes that weren't flat all around. I remember there was a bit of an industry welding panels back in roofs.
I've heard that there is improved rubber and glass that doesn't have these problems, but I was told that by a couple of fitters and they're hardly likely to talk their product down.
Actually, if you want to have close to a cabrio, there were a couple of large vinyl foldbacks in the '70's and 80's that went right back to the back seat. They were brands with names something like Silverado and Webasto, and I think the Webasto were fitted to BMW and that level of Euro car. Not a candidate for my car, but I've been in cars with them and it's like a convertible, which I like.