Need information 70 340 block a cast crank?

Motor has a 360 balancer. The motor has .030 TRW / Sealed Power L2316 pistons. Crank is a cast iron. Has J Heads that have 360 cast into them with 2.02 valves.
Looks to be a Frankenstein 340 motor lots of different parts used to make one motor. At least I know now thanks for everyone's help and input.