make it new or leave it alone ?

Buff it out and call it. It is a nice car and the big wheels will ruin it (in my opinion)
One of my dislikes is classics of any stripe that are lowered with big wheels, never understand the thinking there---------guess I'm a dinosaur----What looks good on a Honda Civic does not necessarily translate to a 60's/70's American classic.
DR---:)
I agree with this statement. Leave the paint alone and unless the interior is really bad leave that as well. DR, you're not a dinosaur, I agree with you about the wheels. Those thin wall tires don't look right on these cars. I would spend more time looking over an original car, even if it isn't perfect, then I would looking at many of the over restored cars out there now.