John,

My .02,

Go with the twin set up!! Lets face the real facts as to why most of us got into turbines in the first place, the pure sound and awe affect or we would still be flying whinning ass 2 stroke fan units. Nothing sounds better than a pair of turbines or twin anything for that matter, and you bought an airframe that is perfect for them. Most of the planes built that should have twins, don't have the room for 2 turbines and we run a BIF pipe. Your plane has enough room to put what ever size turbines you want to fly in it. As for the dependability of 2 turbines or double trouble?? I would not use some older tech turbines laying around, I would look into the newest turbines that are plug and play with very little ancillary equipment to install. You could use 2 - K100G KingTechs that will give you a true 44 lbs of push for $2,050.00 each. Or if you want ballistic fun, go with 2 - K140G's that will give you a true 62 Lbs of push for $2,450.00 each. I have a friend that ordered the YAK and is going to use 2- K-140G's in his. I think you will find you can buy a pair of smaller turbines for close to the same price as a large single. Obviously I am partial to KT but you can shop the other turbine companies product and make your own decision. Again, just my .02




Good luck & good flying,


Dirk