Those appear to be green tops, which from part number are 18lbs. If you need larger there are pink tops which fit and are 21.5lbs. The next step up for 6cyk are 24lbs blue but that isn't what you're after. Stock m42 injectors are brown/orange and I believe are 19lbs. I think there is a difference between early m42 and later m42/44 injectors. You may need to run an adapter if you want the 6cyl injectors:
https://store.vacmotorsports.com/vac...ors-p2454.aspx