I have a 1995 Evinrude model e50jeod (50/35 jet) that needs a powerhead and found a good deal on one but need info on whether it will work. The one I'm looking at on e-bay is a Johnson 48/50hp with unknown model and the guy thinks it is a 1988. The only thing I have is the serial# from the core plug of-G3552638. Can anyone steer me in the right direction?