All but one of those came in 1992, when he drove five races in the #61 Diveer Dental Pontiac. Whitaker's debut came at Rockingham, where he started 34th. However, Whitaker finished last due to crash damage. His first race he was running at the end occured at Myrtle Beach. Whitaker finished that race in 23rd, in his third career start. The next race, at Orange County, Whitaker finished a solid 20th. He closed out the year with a 32nd place finish.
Whitaker made his final start in 1993, and it occured at Orange County. Despite a good 21st place finish, Whitaker failed to finish the race. The good news was that in addition to a decent finish, Whitaker also set a career qualifying mark of 24th.