Originally posted by rcosmax
Dokidoki There is alot of difference between the two. The stock is well...stock. The zac modified engines are modified to various degrees. you can get everything from only sleeve porting work all the way up to crank balanced and fully polished zacs. Also a big difference in price to the stock engine.
would you happen to know how much would a fully modified zac ostr engine cost??? would you also happen to know how much increase in horsepower you get out of these zac modified engines??? by the way, is zac a japanese company???
