Saw this on another forum:

As of Monday 2/22/10 ATP Racing Engines has closed its doors due to circumstances beyond our control. We have been doing this since 2004 and have enjoyed working with everyone. This is something that was completely unexpected and we sincerely regret having to close. We have made many friends along the way and wish everyone the best in the future. We sincerely apologize to all of our riders and customers. This is the hardest thing we have ever had to do. There will be many rumors and lots of speculation, but we are not closing due to lack of business. This is a personal matter. Please feel free to contact Mike or I with any questions and we will answer them to the best of our ability while maintaining as much privacy as possible. The shop phones and email will be on for a couple more weeks while we finish up. However, we will not be answering calls, only returning messages, so please leave one if you call.