Silly season and driver moves

Bowman retirement confirmed, Zilisch expected replacement, Chandler Smith to RCR, Preece re-signs with Ford, Dean Thompson to Haas Factory Team. Chase Briscoe buys Brent Marks Racing for High Limit Sprint Car Series. Non-Cup silly season also active: a roundup highlights Heim, Kvapil, and other Xfinity/Truck moves reshaping the 2027 grid.