Demon 340 six pack factory?

First of all let me say that by no way am I an expert on Mopars or Dodge Demons.

I met a guy at the car show yesterday who had a 71 Demon.

He told me that it came from the factory with a 340 six pack.

I told him not that I knew of.

A few differences in our cars. His fender tag started as E44 not E55 like mine and his VIN on

the dash did not have the letter "H" in it like mine. He also did not have the rally dash.

Can anyone educate me on the factory 340 six pack for Demons?
I may be a bit old, but pretty sure E44 code is 318 2 bbl. Plenty of those built.