Just inherited a Wheel horse 312A. I have a few questions. Are there any snow blower attachments for this model? If not is the attachment for the 312-8 compatible with this tractor? Anyone know where I can get mulching blades for it size 17.5in? Also I am considering changing out the engine for a 16 to 20 hp engine will the drive system be able to handle the added power? Thanks, Dom