Hey for 400 dollars is the Vito's 404 big bore sleve kit with 68mm pistons and head/domes a good choice to have ported for my first rebuild... Would send to jim at passion racing for the work/porting. http://cgi.ebay.com/ebaymotors/YAMAHA-350-BANSHEE-VITOS-VITOS-404-404CC-BIG-BORE-KIT-/230635450423?pt=Motors_ATV_Parts_Accessories&hash=item35b2f1b037