Hello Tim:
Your Enya .19 will make a very good Sport engine.
I have had them in the past and still have one, and found them to be:
powerful, easy starting, easy to manage, and built to last a very long time! Given the correct fuel, 25% castor oil, they will run very well and last forever!
In the 70's. I flew combat with a chap who used one in FAI combat and he was as fast of not faster than I was when I was running a ST G.15 on pressure! I thought that my FAI Nemisis was the hot setup but little did know that his ugly Enya was a beast! I know that it was too much displacement for FAI but we had to run what we brung in those days.
Enjoy the Enya! Oh yes, parts are still available!
Frank