I remember seeing the car at the KitCentral meet up years ago, think you emailed me as well. I think the car was build fine, its just the care and maintenance for these cars is much more than an average modern car. Little things need attention constantly. When someone not mechanically inclined buys the car the little things don't get attention. Think the hiccop with this car is it's an automatic, if it were a manual it would be gone already. So most of us considering it would have to do all those little things on top of a tranny swap.
My car had the same kind of issues when I bought it, it's part of the reason I documented it on the blog
https://lamborghinicountachreplica.wordpress.com, will give you a sense of what is ahead.....good, bad and ugly.
The big thing is the cars don't come up for sales often. If you have possibly years of patients to wait for "the one", then wait. If looking at the car and fixing it (assuming your mechanically inclined) is just as satisfying as driving then go for it. Drive it a bit, find a local car club that has interested mechanics you can get to know. Source out through them what you'll need help with. ie. an electrical guy, tranny guy etc.... a case of beer and a half day of direction from them will get it done, not quick but you'll learn a bunch yourself and about the car.
You have builders in your area you can get to know as well......like me. Guys like Eddie and others that you'll end up networking with once you have the car and we know you are invested in the hobby.