The W-2 head comes in to basic versions.
With or without rockerstands. In any event, you'll need to purchase rockers that are offset. The heads can use stock parts (In full) from a 70 T/A /AAR 340 head. Otherwise, you'll need to purchase offset exhaust rockers so you can re-use OE parts. (Adjustable rocker or not)
Your search for offset rockers in the link above are correct to use.