NASCAR fans, check your closets: Dale Earnhardt Jr. is looking to buy a t-shirt you just might own.

On Wednesday, Earnhardt Jr. turned to Twitter to help him find a shirt that commemorates his late father, racing legend Dale Earnhardt Sr., as the 1979 rookie of the year. Earnhardt is known for collecting vintage shirts honoring his dad, but this particular shirt has eluded him so far.

“It’s literally the one reason I search eBay daily,” Earnheardt wrote on Twitter.

He is looking for the shirt in a size XL. He did not say how much he would be willing to shell out for the shirt.