It's possible that what you have now is an aftermarket solution for a previous owner.
I think you can do whatever you want, it just takes money. Have what you need built by someone local. If you attempt to purchase anything from Winn directly I would think it would be very expensive, of poor quality (the fabric is really poor on new Views) as well as your rig is a bit older and they are bigger now so things may not fit.
Enjoy Life! It's later than you think. Life changes in a second. There isn't enough time for cheap booze and cheap cigars.