This is WatCons RCJS engine conversion plate. It will allow you to easily install a Kawasaki JS650, SX750, or 800 SX-R engine, into a JS 440, JS550, or 550SX hull. It is the best aligning plate on the market. You can get it from WatCon for $85usd. Log in to WatCon.com to place your order.
