I spent thousands having Bruce Turrentine build my Renesis from a brand new engine for my Cozy MKIV. I finally saw the light and abandoned that idea when it was evident Tracy Crook was getting out of the business. I had not purchased the gear drive yet, (thankfully), and I found a buyer and sold the built engine for under $1000. Penny wise,,,dollar foolish, but I learned my lesson before I threw more money at it. That was about 13 years ago. The demand for your engine & PSRU will only be those who are trying to salvage what they have already Rotary wise. Since RWS closed shop, the market dropped off dramatically.