Re: adding tilt and trim
the system in picture should fit your engine. Although from pictures, I would make sure the system in picture works. It looks like it is missing the cable grommet for motor ... water inside motor = bad motor. Also, system still mounted onto complete transom clamps is a red flag. As often as not, it means that the previous owner was unable to get it off due to galvanic corrosion. make sure that both upper and lower mounting shaft can be driven out with moderately light taps of a mallet.
there doesn't appear to be galvanic residue. it could just be that the motor is broken and the guy couldn't figure out how to remove system with broken motor. I would check it out. Systems with galvanic corrosion are bad news.