An O-360 or IO-360? Also I can't help but wonder if the pound per horsepower equation works out or whther you might not be albe to extract more HP from an IO320 without the weight penalty of the -360?
RV-8, QB, built, flown 150 hours, sold;
RV-4 - attempted repair, rebuild and remediation - abandoned and junked
RV-4 fuselage and wing kits - both at QB stage;
2015-2018 dues paid!