I have model number VQ1002SP with the 10hp briggs. I purchased it in Nov. 2005 and have loved everything about it except the motor. Well the motor took a crap on me today and needs to be replaced. I went to my mechanic today and he quoted me a price to get the same exact engine put on. I told him I really wanted to go with a Honda this time. He suggested going to smallenginewarehouse.com and getting this one: http://www.smallenginewarehouse.com/product.asp?PN=GX390QA&desc=Honda%20Engine%20%2013hp%20Horizontal%201"x3-21/32"%20Keyed%20Shaft,%20OHV,%20CIS,%20Low%20Oil%20Shutdown,%20Recoil%20Start My question is: Will this engine work on it? He says that it will be a great motor for the machine and it won't be a problem getting it to work. He said he might have to drill different holes on the Billy Goat to mount the motor. I want to make sure from you guys before I order this motor, since he isn't a actual Billy Goat dealer.