Frankie Muniz finished 33rd on Saturday in his first Truck Series race since the “Malcolm in the Middle” star announced he will become a full-time NASCAR racer next season. Muniz, who is 38, recently made the jump from part-time racer to a full slate in the No. 33 Ford for Reaume Brothers Racing. Muniz has said he is confident his team could be successful in this series, but Saturday’s race was marred by mechanical issues for his Toyota.