42 Product design and development in the field of automotive after-market products in the nature of automotive engine blocks, automotive exhaust pipes, mufflers for motors and engines, engine tuners and automobile suspension system components, namely, anti-sway bars, springs, struts, shock absorbers and mounts; design and development of software for use in the automotive after-market to increase engine and suspension performance in vehicles, excluding the design and development of apparatuses or instruments for conducting, switching, transforming and storing electricity, of electrical apparatuses, and computers and computer software to control the aforesaid apparatuses and instruments