Joe Gibbs Racing has a seat to fill following Martin Truex Jr.’s announcement this past Friday that he will retire from full-time competition after the 2024 Cup Series season. Truex, 43, contemplated walking away in the past few years, but has decided to leave the sport following a highly decorated career. Truex has won 34 races across 19 seasons in NASCAR’s premier series, including two Coca-Cola 600s and a Southern 500. He reached the mountain top in 2017 driving the No. 78 Toyota for Furniture Row Racing, winning his first and only Cup Series championship. Tough shoes to fill, yes, but whic…