Welcome to the C-C forum.
Lived in Klamath Falls for 2 years. Dad was USAF stationed there when I was a kid. There was a Strategic Air Command squadron of F106 Interceptors.
Used to love seeing and hearing those jets.
I would not be looking for a clone Hemicuda if I had $75K budget for a car but that's just me.
You could spend more having one built, that's for sure. Less too depending on how much you can do yourself...
Sight unseen it's hard to place value on anything. For $75K it would need to have a shaker hood, the right colors, rubber bumpers, Air conditioned and near perfect. Not lacking in any way. If it's not all that I would pass and build one.
If the car is well done and has everything you want and you don't want to invest a year or 2 or 5 building one... It's only money. You could be driving it tomorrow!