70 318 with 340 internals/Cyl Head
1970 318 has forged crank and uses the same balancer as a 340 thru 1972
he is most likey bsing about the 340 crank getting those that no nothing to think its special
takes 5 min tops to get the block numbers
the people you are sorta calling out woudnt need to ask your questions as they know by a look whats what
I took me 2 words in search to find this
https://www.forabodiesonly.com/mopar/threads/1970-72-340-engine-balancer.528361/carry on