Hey guys I work for CCmotobikes.com, and just a heads up on the heads (no pun intended), We currently only have 2 used heads left. We use them to test out motors that we get in when people want a new slant head installed in order to confirm they're motor quality and whether or not it will be able to take the compression boost. (They're in great condition we degrease them and do quality checks before selling them) Give us a call or email us because these slant heads are hot. Also just a clarification all our kits are the new slant head kits but we are currently out of stock but we should be getting some within a week or so.