Mexican Valiant question - ‘62 & ‘65

A friend bought a pair of Valiants that he saw in Mexico. They are in San Diego now with official paper work to be legal in the US. He asked if they are worth restoring.  They are both 4 doors a '62 & a '65. My initial comment was the 4 doors aren't really. They aren't wagons either so not rare. Except he said the '65 is a 4 speed manual. From what I've read those are a bit rare. Someone is trying to get him to pay @$10,000 to "restore" them. He knows nothing about cars & just thought that they're old & kinda cool so they're worth a lot. He also thinks they are both slant 6's but not even sure about that. I'll ask more about them when I see him again at his Mexican restaurant. 
Anybody have experience with these?
 

If they're cool to him then it may be worth it...to him. Just know that there is likely little secondary market for the cars. 

Sure, someone will buy it from him, at some price but it could be very easy to get a negative return on investment. 

All that said, it doesn't mean my advice is "don't do it", just know why you're doing it. 

He isn't going to get $10K back from 4 door A bodies in the U.S.   Mexican market or not.

Typical sample of 1962:

Typical sample of 1965:

Ya that was the first question I asked - "how many doors"? 
I like the 62 lines. 
 

I remember, a long, long time ago (mid-70's) there was an article in Sports Illustrated about some guy street racing an early A-body which, if memory serves, was an early Valiant like the yellow one above.  He had a tricked out 440 or a 426 in it and his procedure was to get the car built then pour a quart or two of 10W-30 all around the engine compartment and drive the car on a dusty back road for a half hour or more to attempt to make the engine (and support systems) as unrecognizable as possible.  

Does anyone else remember that article...?