I doubt that's a Lanier 87 inch Yak at 15 pounds. I bought mine used from a guy that had a DA50 in it, it would just hover, but wouldn't pull out of a hover. I put a LS100cc twin in it, now it will pull out of a hover, but it's a real porker, not a nice light flying plane. A Brillelli 366GT would be good or a 3W 60. It's not one of the new generation of 87 inch lightweights.