Building W2 heads -need help

Without looking up part numbers, theres 2 different W-2 heads. They are with and without rocker stands. If yours do not have rocker stands, there given the label of race head. With the rocker stands, where you just bolt on the shaft and rockers, that would be the "Econo" head. "Econo" is used just simply for the abilty to use the stock rocker shaft and 340 T/A rockers. Regular rockers can be used except for the intake rockers which need and offset.
These rockers can be purchased by Crane in ductile iron or roller. Other places have these rockers as well.