I have just gotten my 1987 or 1989 force f-150 motor out of the shop. I have an 87 cajun bass boat i would use with this motor. The boat has a crysler control box which is wrong for that motor. So the mercury marine shop said.The motor will not go in reverse.Reason i say 87 or 89 motor cause the numbers on the motor were gone when i bought it.Is there an after market or universal box that can be used? Maybe some of you have a control box laying around? Sure would appreciate any help on this...thanks