Thanks for the replies and advice. I've already spoke to the local Tracker dealer about checking out the motor if needed.
I checked the value on NADA this evening, and you're right on about the price. Seems to me the boat should be bought for around $9,000-10,000 after factoring in the pristine condition.
I'm planning to take a closer look this weekend, so I'll be sure to check on the HP rating. You make a great point, I saw a few of these for sale on various web sites and all of them had 150HP motors.
Thanks again!