After three days of NASCAR Sprint Cup Series testing, the Trucks have taken over at Daytona International Speedway as NASCAR Craftsman Truck Series preseason testing is underway at the 2.5-mile superspeedway.

When I look through all the various storylines at the three-day test which began Friday, the one that I feel fans should be paying the most attention to concerns the Toyota program.

For the first time since 2004, the manufacturer will have a completely different engine combination than what they have been racing in the past. Last year was the final year that they could run the engine combination in Trucks and Busch (now Nationwide Series).

Considering the strength that they have shown in the last couple of years in the Truck Series and in their rookie year of Nationwide Series competition, I’m sure even Toyota is anxiously awaiting to see how they will be with this new engine package. They would not let them run their old truck engines in the Cup Series last year, and NASCAR gave them one last year to run it through their Truck and Nationwide Series before requiring a change.

In their last season with the old package, Toyota won 13 races en route to the Truck Series manufacturer's title and three drivers in the top five in the championship standings.

The new engine is based on the powerplant that they run in Cup so keep an eye on this story as it develops because it could foreshadow how Toyota’s Nationwide engine, which is only slightly different, runs … and to a certain extent, it can also show how their Sprint Cup engines will perform.