what center caps to use

That's a clean looking Dart, and one '74 I wouldn't mind having! I'd go with #2 for the 1970 look, but that has nothing to do with what you should do.

thanks
the car is a true servivor to the best of knowledge at least it was 3 years ago when i bought it minus the steel wheels but they guy did give me the hub caps for it. the body and inside are still original.
On top of that it was bought brand new from a local dealer one car that never wondered to far from home.