my suggestion would be to remove the front panel and stick a digital camera under there and take several pictures. I installed a Comfortroll brand on my 05 ZX 225 and it works great. Since you have a 190, I would suggest making sure you don't cut any cross stringers that run left to right, etc..

here's a few picts of my cut: ( notice the stringer in front and along the side )







Good luck!
JD