Picked up a 1984 ranger with an 84' johnson 150 hp vro system, #j150stlcrd, would like to mix my own oil to fuel because last owner broke the fuel inlet nipple off the fuel pump. i know there is a fuel pump only replacement, but don't know which one to get, any help would be appreciated, the dealer i usually buy parts from want's to sell me an original fuel pump, cost is over $400.00, definately do not want to go that way. Please help, Thank You