Wheel and tire question for 68 GTS

so many tire size recommendations it get's to be too much. in the end, all said and done what tires front and rear with no modifications to car can I go with? I have brand new stock 14x7 cragar s/s wheels. I want it to look aggressive with the tire setup but don't want cut up my 68 dart gt. you also mentioned a registry, how would I go about finding that? thanks for all the suggestions, look forward to hearing from you guys, thanks brian