Early vs. Late dusters

CO emissions laws require tests on cars '76 and newer so the '75 just barely misses that. I also believe Pueblo county doesn't do emissions testing, it depends on the county where the car is registered. Some parts of CO don't do emissions.

I don't think anyone expects him to get the '75 and just start driving it right off the bat. He'd have to do all the same checks on the '72, AND swap in a running engine plus other major work.

I think at this point we need to see what @Princess Valiant 's thoughts are so far and get more details on her cousin's availability (he's in college so spare time is minimal), motivation, skill level, and where he'll be working on the thing in the first place. Not to mention how far that work space will be from where he lives or goes to school.
Amazingly California is smog exempt also Pre 76.
Grandpa, Dad and both my Sisters born in Loveland MoparR&D, I'm the first one born West of the Rockies ! GreatGrandma died in Loveland at over a 100 back in 72 or so. Grandparents lived on West 4th St. a couple blocks west of the
park.

Grandpa was quite the stud born in '01, worked at The Elevator Purina Mill. Went to visit the summer after The Big Thompson Flood when I was young.

Small world !