I need a new trim motor for my Johnson Fastrike 1991 model J150GLEIS I was told it was part number 5005374 now the problem is I can get an oem 1 for 126 plus shipping or I can get 1 for an OMC for 89 free shipping both are new and have a 1 yr warranty can I go with the cheaper one and be happy or does it have to be oem