Tire suggestions for '74 Dart Swinger

This is an older thread but I have 205/65/16’s on my dart. I like the wheels but the tires are mismatched. I do get some rubbing on a tight turn like say if I’m backing up and crank all the way or sharp turn in the driveway. I don’t usually do this but I did test it out. Otherwise it’s not an issue. I’d like a little wider and lower profile but much bc in my opinion the tires on there look a little balooney to me. So I’m wondering what is a good width and height for these? The rim is 6.0 I believe. I know I need to know that but let’s go with 5.5 to be safe and maybe if anyone has recommendations for either and I’ll get it measured for sure. Thanks!!