Not only was the first one I purchased full of rust, drivers floor, no trunk, one rail, both quarters, some on front fender dog legs, but the car was infested with 5 mice of which I couldn't trap. So I had to kill them with my dart gun. Kind of fun. They were pretty hard to get. Anyway, all the wires were chewed up and literally every crevice of that car had rat debris stuffed into it. I spent so much time trying to get rid of the smell of rat piss it drove me nuts. Long story short I got the car running and replaced some of the rust. Mostly just made it a driver with a few minor problems like no trunk just so I could get my fix. 1973 Petty blue Cuda. That's in my posts also.
Basically don't be afraid of anything. The bigger the wreck, the bigger the challenge, And the more satisfaction when you finallly get to drive it!!!