I got the throttle hooked up today. The old engine had a cable swivel that i had hoped to re-use, but it was crimped in place, no way to remove it.
The new engine had a hole in the same location.
I found a bolt the right diameter, cut it to the length I needed, and inserted it through the hole with washers on each side. I drilled a hole in an acorn nut, inserted the cable in the hole, and tightened the bolt.
I robbed the cable clamp from the old engine to hold the sleeve in place, everything works great. Because of the leaking gas tank, I only put about a quarter tank of gas in it to take it for a test drive. Before the engine swap, it would barely go up the driveway with my 9 year old, now it will take off with both of us on the steepest hill I have. It seems a little cold natured for the first couple of minutes, but is is only 25 degrees here today. I'll be good to go when I get a gas tank that doesn't leak.