I just picked up a Taurus TS42 for my S-Stinker in progress. The TS42 comes with a backplate mount and the length is almost exactly the same as the Moki 1.8 shown on the plans. I hope the weight does not become a problem... I know the power will be more than enough.

By the way, I modified my S-Stinker rudder and fin to match a Pitts S1-11. It has a little more area and looks better in my opinion.