The K20A3 much like the CRV/accord/component k24a does not have a standard DOHC VTEC valvetrain as we understand it in the B-collection engines - the K20A3 should basically be referred to as a "DOHC i-VTEC-E" engine, because it takes advantage of a VTEC-E cam setup. This can be frequent in https://elevemotors.com/product/jdm-honda-s2000-f20c-engine-for-sale/