I'm not sure the early '80s pics taken in CA are of the same '70 hemi'cuda from Ohio

in the early '80s the Ohio car was being raced with a blown HEMI on propane, the then & still owner is in the gas business
(IIRC late-'80s early-'90s restoration made its debut at one of the NORWALK, OH Chrysler Classic events)

the above shown at MCACN EW1 '70 hemi'cuda & the no-longer-in-existence (1 of 1) '70 HEMI 4-speed Road Runner convertible were sold new from:

UNVERFERTH MOTOR SALES
KALIDA OHIO

small town OHIO with a population of 900 in 1970