The K20A3 just like the CRV/accord/element k24a does not have a normal DOHC VTEC valvetrain as we know it in the B-sequence engines - the K20A3 need to really be termed a "DOHC i-VTEC-E" engine, as it employs a VTEC-E cam setup. In the late ’70s, the Skyline C210 GT-EX was introdu