I have a x495 had in the past a 318 with a snowblade was wondering what is the difference in the blades from the 318 to the one for the x495 I can find the 318 blades everywhere but nothing for my tractor, I dont want to spend 1300 for a new blade if a 318 will work, what is the difference and I was told a while back that there was an adaptor kid but no longer???? If anyone can help it would be great as I am tires of searching the web for an answer. Thank