my plan is to restore it and sell it for profit, not a good idea?
Can still be a good idea, but it's much harder than most think.
Sorry I did not follow the link you posted yet, but how much are they asking (and is it even still available?) and how much needs to be done?
Yes, certain '66 models can be worth more due to their simply being the first year. But these days, that really only equates to a very early production model. Or one with certain characteristics that make it worth more. But still to that, is the initial purchase price a good deal?
How much could you get for it restored?
I don't think as many people are really looking for the rarities as there used to be. Square cut bumpers, eyebrow grilles, forward leaning rear shocks, etc. Now, a real gem might have the ultra rare Pony interior option. Heck, that would be worth getting just to say you had one!
But again, how much does it cost, how much will you have to put into it, and how much will you gain.
To the how much will you need to spend to restore it point, are you doing 100% of the work yourself? Or do you have to farm out some of it?
Remember that these days a pretty good paint job might cost $30k to $40k all on it's own. How much of that do you get back? Not that much! At least not for the paint.
If you can paint it for under 10K you might not over-spend yourself.
And then it comes down to how will you sell it. The big auctions might see sales in the $40k to $150k range, while the big-name spec builders might demand $250k to $500k for one built just for you. But you won't be able to command that price unless you're one of those rare few.
Regarding auctions, the small auctions I see are not likely to see the big prices. I saw a couple recently that pretty nice EB's went for under 40k if I remember.
Personal sales? Very hit-or-miss. You might see a Bronco listed for a high price sit for a year or two online. Where a cheap one might be gone in a single day (or less!) if someone is trying to flip it.
Sometimes your best bet is literally to flip it. Just wash it, put air in the tires, clean underneath a bit, and re-advertise it.
But it's a gamble no matter what. Unless you guy super cheap, do all the work yourself, and get the right two buyers that just can't live without a '66.
Good luck either way.
Paul