Big Block A-Body K Member Selection

Hi!

New to the group, first post. I appreciate the opinions of those like minded individuals in this group.

I am in a unique position ... I have three MOPAR K-Members to choose from to install a big block in an A-Body. I have a 75' six cylinder with spool mount, a 70' small block and an original '67 big block with poly mounts, brackets and all new suspension components for whichever direction I go.

The '75 & '70 will require Schumacher Creative mounts ... I have tti shorty headers, so exhaust doesn't play a part in the decision. If you could choose between these three ... which would you choose and why? Please don't point me to QA, as I want to create the 383 Barracuda that 'Ma Mopar' would have built with factory parts (personal preference).

Thanks in advance for your help and opinions.

Paul
The A-Body Guy