In 1967, Leong failed to three-peat at Pomona or Indianapolis, but did triumph that year at two popular independent drag races, the notoriously fierce March Meet in Bakersfield, and the Hot Rod Magazine Championships in Riverside, California.
[2] Throughout the 1970s and into the early 1980s, Leong campaigned a variety of "Hawaiian" Funny Cars, both in NHRA competition, as well as "match racing" at smaller, independent tracks.
[5] In 1997, Don Prudhomme, then retired from driving and now a multi-car team owner, hired Leong to tune his "Copenhagen" Funny Car.
With Ron Capps driving, Prudhomme's Leong-tuned entry won Funny Car Eliminator at that year's inaugural St. Louis race.
[6] In 2014, Canadian drag racer Ron Hodgson hired Leong to tune the Troy Lee Designs Nitro Funny Car driven by Tim Boychuk,[7] for competition in the NHRA Heritage Series.