Has anyone explored putting the Koler Aegis in a 425? According to their website Kohler says "The footprint of a Kohler Aegis engine is also interchangeable with that of the Command vertical twins, making it easier for OEMs to fit the new engine into existing applications." Yeah I know we're not an OEM but it seems many of the people in this forum are more than capable of this. Or have contacts at PowerTrac that could comment on this. It's not diesel but it may be a less painful swap.