I've got a silver '98 M3 convertible but over the past winter the soft top has taken some damage is badly needing replacement and I'm looking at at least a 1300$ replacement for the soft top if it doesn't need anything but the springs, vinyl and fabric replaced. What kind of prices would be good for a hard top to just replace the whole thing with something I don't have to worry about as much? And would it increase the weight or does that just depend on how it's installed?