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Frankie Muniz earned his highest-place finish in the NASCAR Truck Series last Friday in Daytona ... and the "Malcolm in the Middle" star hopes to build on his strong performance -- telling TMZ Sports he's "more hungry than ever" to succeed in the sport.
We caught up with the actor-turned-driver following his 10th-place finish at the Fresh From Florida 250 ... and he said he was thrilled to see everyone's hard work pay off.
"It feels amazing," he said.