I bought a SV-22 that weights 69 Oz's with fox 60 and need to chose an engine for it. The Fox is not an option. I have a DS60 lite ringed new, St-51 Italy made CL version new, ST V60 that needs rebuilt and a K&B 61 ABC CL from Brodak new. Can any of these engines do a good job with this plane or do I contact Randy Smith for a PA 65 SE and tube muffler. Thanks in advance.