i was faced with having to replace one of my mounting boots which is a one piece unit with the reed cage and what the dealer wanted for the part i started to research aftermarket reeds. i fianally decided on the RAD VALVES from BOYESEN. they are made of aluminum and after the initial investment the only things that I will have to replace are the carb mount rubbers($6.00 @) and reed petals which is MUCH cheaper than buying the whole units.
throttle response was better than i had expected. I would recomend these, hope this helps. GOOD LUCK!!!