I was helping a friend clean up a piece of property he recently purchased. Behind a shed out side was Johnson 135 low profile. I took it home for a good project. Worked on it for a bit and found ID plate on mounting frame. The ID says it’s an Evinrude 1974 115, but the cover says Johnson 135 low profile power shift. The mounting frame color appears be be just a slightly different color than the lower housing but not enough to be sure. I actually got if running with lower unit off, compression is between 125 and 130 in all 4. Just hoping to sell it if everything works ok this summer. Not that it is really going to make a big difference but is there a way I tell what engine I have.