Ratical, Let me give you some advise I hope you listen to it closely. Racing 101 in a entry level class SVL or P class is BUY A MERC. BLUE RACE MOTOR. Look for a boat that has one or build a boat and put one in. You will save thousands in motor repair. People come and go out of this sport mostly due to lack of money they want to spend. I can promise you one thing there is no saving money building your own power plant. Also there is no resale value. Good luck and if you need info please call.
Take a good hard look at Guy Costas SVL the blue one.