Thoughts on this car for a project with my pops

Howdy all,

Just joined, though have been reading here a lot over the last couple weeks. Long story short, my pops is just retiring and he picked up a really nice 66 Barracuda that we are going to restore together. Awesome.

It has me thinking that I will get one too, and do a slower build over time, but ultimately we have two. We will start with the one my pops got since it is pretty clean.

My question today is regarding a second one I am looking at. I am curious how rare it might be, and if there are any red flags I should look at before taking it on. I have some experience, and am excited to learn more, but there are always those things that are non-starters.

The good:
The bad:
Since we are starting restoring a different clean one, I am not against taking something down all the way and replacing panels and things that need to be for the second car. I guess what I mean is I don't assume it would be a quick project, I'm just interested in if it is a crazy one.

Any insight y'all could share on:
Depending on what I learn I'll decide on whether to go for it and whether to restore the original engine vs swapping in a different one.

I'm going to look at it on Saturday, so if there is specific things to check I can get pictures then. I've attached the pictures I have so far.
IMG_1819.jpg IMG_1821.jpg

Thanks everyone, and I hope to chat with y'all further as these projects with my pops proceed.

Best,

-Dan