To answer your question I based this purse on a 20 car field. The reason that disclaimer is there is in reference to the outlaw modifieds. These guys are doing a make up show in Houston the same time as our show. So the disclaimer is only intended for that reason only. After speaking with many various racers around the Dallas/Ft Worth area they are very excited about the show and the upcoming 2010 season. In reference to the Enduro. Yes the Enduro race is scheduled for Febuary 21, 2010. We only had limited space on the flyer. There will be a flyer in reference to the Enduro within the next 2 days that will give all the details in reference to the Enduro. I apoligize for the confusion. Should you have any questions please do not hesitate to call me. My # is 214-753-7356. I look forward to seeing yall there.