71 or 72 60 hp selectric Evenrude

[tsubaki]

Those electric shifts are the only OMC products I avoid.
Usually they rot in the foot, replacing the solenoid is expensive and a pain.
I'd plan on finding a blown or cheap 3 cylinder and use the powerhead off the electric shift, if needed. You will also need a control box.
That Bonita will do alright with a 2 cylinder 50 horse on it also.