yes, it's on ebay, but it's actually the one that's $600. I know it's priced ridiculously, but it's the only one I've been able to find that has the starter on the right side. (facing the rear of the engine) I can't use one that has the starter on the left, due to the oil filter housing being in the way. I'm sure the #4's are very hard to find, but I doubt many people are looking for them. I would be happy to sell it, but I bet I would have a hard time finding a buyer. I attempted to 'bump' my engine over this evening, but wasn't successful. When I put 12 volts to it, I could hear the solenoid engage the starter gear, but it didn't move the crank. I then put a breaker bar on the crank pulley, and it was very easy to turn. I may be wrong, but I determined that it must be a 24 volt starter. I found out today that this engine came out of a grade-all machine. Tomorrow i'm going to run 2 batteries in series to see if I can turn it over. I know it will turn the correct way, but i'm just wanting to double-check to make sure before I start spending more money on it. The fan blades are facing the correct way, but I still want to check to make sure.Is it the one on Ebay for $500? I think that is outrageously priced. The housing you are looking for is probably the most common one, your #4 is probably much harder to find.