EMI is Eagle, Schnee, Henchcraft, and Stallard chassis companies that have all merged together with Speedway. The Eagle by Silva are chassis built to Paul Silva's specs by Eagle. Last I knew Larson's sprint car ride that Silva is crew chief on were Eagles. They might have built him a new midget chassis.

I would guess that Larson has a Toyota engine but that is left off the entry considering he is sponsored by Chevy for his cup ride.