I was under the impression that only toyota team to build their own engines was JGR, and the rest are built by TRD. I dont think JGR even leases their engines on the Sprint side, but I could be wrong. JGR had some issues early in the year and they got so desperate that they sent out their engines to TRD so that they could try to find out the issues with the engines. I wonder how much TRD copied their engine design?
When Kyle Busch wins the truck races, he thanks Gibbs for using his oil in his race trucks. They must have a special deal going on.