Alex. The rail system will work for all new tops. Badger has one or you can go with The Rovers North one that is made by Badger but a bit cheapers since it is designed to be used like the original tops. THe One direct from Badger requires a door frame kit and different door seals.
I think the Standard RN one is about $1850 and its a real nice top. Oh and Best Top does not make Rover Tops any more.
Legend in My Own Mind.