Rbx461 windgard/ crop feeder

Last year I bought a rbx461 and found out the window guard/crop feeder is missing.. I was wondering if there is a bolt in roller style feeder unit available for this machine?? where, which models would i look at to find the parts I need? I would like to put a roller on.. something like the newer Vermeer with the stars on the roller.. Any comments would be greatly appreciated thank you

Rbx461 windgard/ crop feeder