SAito discontinued the 80 many years ago - and with good reason. It was heavy and had no power. An OS 70 Surpass would blow it out of the water.

It would NOT be a good powerplant for the Skybolt (I did the RCU review of the Skybolt)

And it would not be a great choice for the UCD.

That said, the Skybolt is one of my favorite planes, but it is NOT a 3-D plane. So if you're looking to start learning 3-D, skip the Skybolt altogether. The UCD would be a much better choice.

You can try it with the Saito 80, but don't get your hopes up.