Will a 454 fit in a 1997 GMC Sonoma?

No, a 454 engine will not directly fit in a 1997 GMC Sonoma without significant modifications. The Sonoma is designed for smaller engines, and the 454, being a large block engine, would require alterations to the engine bay, motor mounts, and possibly the transmission and drivetrain. Additionally, considerations for cooling, exhaust, and electrical systems would also need to be addressed for a successful engine swap.