@Gtti
Yes You are right MHI is Mitsu. 
@szuberi
Edelbrock use Garret Turbos for their kits.
Like everyone said they make everything, Even Military weapons such as Fighter Jets and jet engines and all
Here is some stuf on the MHI
Mitsubishi Heavy Industries
-Aircraft manufacture (F-2 fighter, SH-60/UH-60 helicopters); maintenance and repair (including F-4EJ and F-15J); helicopter engines (for OH-1); guided-missile destroyers; submarines; Type 90 tank (body/gun turret); Patriot surface-to-air missiles; Type 97 torpedoes; avionics test equipment.
-Mitsubishi Electric
Missiles; targeting systems; radar sets; electronic warfare equipment.