if it came down to t-tops or hardtop, i would go with the hardtop car. little more rigid, and less leaks to worry about. anyone who's had a t-top f-body can see the value of a hardtop car, i mean it is fucking embarrassing when your car springs a leak on a passenger...

yes you can install them, there are a few writeups but it will cost you. if he is dead set just get him to wait for a t-top car that he wants.