I was looking at getting my 650 L motor done to the tits. Big bore, new cam, valves, springs, cam chain, seals, clutch kit, port and polish and whatever else to get more power. Who could i trust to build me a 50-60 HP motor that will be reliable. I know the heat will be greater but i have an oil cooler setup to go on. Pumper carb and good exhaust also.