Neato car. Look at the water pump bypass hose between the head and water pump. If it's about 3.5-4" long it's a 225. If it's only about 1" or so long, it's a 170.
It's a crappy picture but it's the best I can do until I see the car.
I talked to my friend today and he said that the first time he went to look at it, the garage door broke and wouldn't close. The company that repairs garage doors said that they couldn't fix it with the car in the way. So my friend went back over and aired up the tires and pulled it out using his truck. They put it under a carport for a couple of days and then moved it back inside when the garage door was repaired. He took a couple more pics then.