Phil Roitman’s 1973 Buick Century Gran Sport Stage 1 just earned a perfect 1,000-out-of-1,000 score at the Muscle Car and Corvette Nationals, and commenters say its 455-cubic-inch idle might be the best-sounding exhaust note from any 1973 car, period. Roitman has owned the Harvest Gold Gran Sport since 2005 — and he holds another distinction too, having been the very first guest ever filmed for this YouTube series four years before this appearance. Watch to hear the engine note that has viewers arguing Buick built the real sleeper of 1973.