1990 marked the first full year of Road racing, the Stone Racing team went on to win the Firestone Firehawk Endurance Series Championship and finished second in 1991. By 1992, the team won the Firestone Firehawk Endurance Series Championship again, winning 7 of the 10 races and taking second in the other three. The team also won the Manufacturer's Championship, setting a record that still stands to this day.

A master fabricator with exceptional skills in the areas of racing component design and team management, Stone also has a special expertise in suspension systems making full use of all the technology available via an extensive network and resources in the racing industry.

1993 marked another milestone when Stone was joined by brother, Jeff to form Stone Brothers Racing, creating a powerful duo in the racing industry.

The combined efforts paid off when in 1994, with full sponsorship from Porsche, the team entered and won the Sports Car Club of America (SCCA) Pro Series World Challenge with two LMGT 911 Turbos. With world class driver Price Cobb and co- driver Mauro Baldi, they became the first American Driver/Team to win the Prestigious Porsche Cup.

With Stone at the helm of the Level 5 Motorsports team, the 2010 season is sure to see successes in both the Ferrari Challenge and Grand-Am Rolex Series DP division with an eye on the Championship.