Overview
- Mosack will pilot Spire Motorsports’ No. 7 Chevrolet Silverado RST in 12 NASCAR Craftsman Truck Series events with Friends of Jaclyn as primary sponsor for St. Petersburg.
- The announced slate features St. Petersburg plus Darlington, Watkins Glen, Michigan, Naval Base Coronado, Lime Rock Park, Indianapolis Raceway Park, New Hampshire, Bristol, the Charlotte ROVAL, Phoenix and Homestead.
- The inaugural Truck Series street race in St. Petersburg will air live on FOX with additional coverage on the NASCAR Racing Network and SiriusXM NASCAR Radio.
- Mosack previously made six Truck starts with Spire in 2024, earning one top-five and four top-10 finishes with a 12.3 average result following a full 2025 season at McAnally-Hilgemann.
- Spire confirmed 2026 entries of Nos. 7, 71 and 77 in Cup and Nos. 7 and 77 in Trucks, with Michael McDowell set for the No. 7 Truck at Daytona before Mosack’s first start.