soft cab for New Holland

Does anyone know of a soft cab accessory for New Holland ?  I have a NH Tz22DA with firebird fiberglass canopy. I would like something would allow me to leave the canopy on and add the soft cab.

Several compnies make them, - curtus, origional cab, etc. The hichup is that they probably don't work with your existing canopy. You can always sell that on ebay or somthing though.