340/360 J head rocker adjust stud

i thought the 340 6 paks used the "X' head with adj rockers


82 cruiser:

I've had 3 sets of "J" head:violent1:s and none of them had adj rockers unless I put them on

Nope...J heads with angled intake pushrods with offsetted intake rockers......TA rockers only fit TA heads....W2 rockers are different have more offset.