Start out by driving it on the street, if it is street and strip car, at light part throttle for your normal street driving distance and type (except WOT )
Pull all 8 plugs out and look at each one real hard with a good magnafeir Go from there on the primary jetting
Don't be surprised if you end up with 3 or 4 different jet sizes in the primary Tunnel ram intakes are very tunable One barrel per cylinder at WOT