i have a mtf 17/42. what i am looking for is the part for the vacuum bagger that attaches to the deck. i have a bag-n-wagon from a snapper. i would like to use it because of the larger capacity and obviously saving the money would be nice, too. is this part available by itself? what is the cost? what is the part #? what is the diameter of the chute coming offf the deck? is tjere a detail photo or diagram available?