i have just aquired a free rs turbo shell, its pretty good, but the sunroof leaks. the runners inside the roof have gone supposidly.

i would like to use the car as a road legal track day car, as i have a s2 cab for daily use.

how can i repair the roof? is it a case of swapping the whole roof? what if i wanted no sunroof? id like it to look spot on if possible, but may just rivet a small panel over it

any ideas?