200 units according to Roush.
It depends what customizations a person has made on their car, but a stage 3 Roush would destroy a GT. A GT (at least for 08) has a 4.6L engine and a Roush (428r) has a 4.6L engine along with the Roush Super Charger, Roush Suspension, Roush Breaking, as well as many other smaller differences. Overall a Roush is much better than a GT because what the Roush company does is purchase GT's and then upgrade a lot of it.
Through 2012, Mark Martin qualified for 28 Daytona 500s.
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I can think of three who would be in the running, all are around 5 feet tall, + or - an inch or two: Bobby Hamilton Jr, Cale Yarborough, and the Great Mark Martin.
Mark Martin has 40 Nascar Cup wins and Dale Jr. has 19.
One time. Mark Martin married Arlene Everett on October 27, 1984. They are still together.
Mark Martin competed in 236 Busch Series races, it is now known as the Nationwide Series.
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Mark Martin has been in Nascar for almost 30 years. His first Cup Series race was on April 5, 1981. Mark did not race in 1984 and 1985.
Mark Martin has finished second in points 5 times: '90, '94, '98, '02 and '09.
Mark Martin has never won a Nascar title. He was a five time runner-up for the Nascar Cup Series championship.