This is a bolt on kit with no machining required. It will work with your stock head and valves. The item "Honda TRX 700XX 750cc Hot Rods Big Bore Cylinder Stroker Motor Rebuild Kit 3 Cam" is in sale since Thursday, December 12, 2019. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components".The seller is "azquadparts" and is located in Gilbert, Arizona. This item can be shipped worldwide.