1st one in my mind is 2007 HP at Topeka. Brian Linn, Tom Feller and Ron Bartell Qualified top 3 with VW of Don Barrack just behind them. Track was a bit off with many including me with poor grip. Tom and Brian had a race of their own, changing positions many times. With Topeka being a tight track, could even watch their race in the mirrors and when they passed me near the end. They raced so hard with each other their tires had grip that most did not have. 2005 GP with Kent Prather win at Mid-Ohio and 2015 HP at Daytona with the very close finish also stand out.