I'm trying to detirmine the year of my outboard, it's a Johnson 28 SPL and seems to be from the mid to late 80's. I can't seem to find the model number anywhere on it though. If the number is on the exterior, it will be impossible to find because it has been repainted by the guy before me, and he did a pretty sloppy job of it. I've tried using the welch plug number to get somewhere by calling Bombraider, but they couldn't tell me the year.