all the nissan skylines are 2600 DOHC twinturbo nowadays..as far i know there is no 3000cc skyline..some of the skylines are also 2000cc(r32) and 2500cc,but all top of line skylines are 2600cc with dohc twinturbo...its first time that i am seein 4dr version of skyline...maybe is skyline R-35..
correct me if i am wrong.
cheerz