By the parts breakdown that is the correct number for your engine. Where are you getting the suffix numbers, the parts breakdown does not list any suffix numbers?
It's on the coil (see above). These came off a 225 hp motor, but i got 6 plus wires for $30 on E-Bay with a guarantee, figured what the heck. I know OMC has a habit of suffixing part numbers that refer to manufacture date or run.