What Tire sizes are best for my 1969 Barracuda Fastback?

Hi All,
I am wondering about tires sizes for My B-Cuda. I have 14" Rally wheels I would like to put on it. It has the small bolt pattern. I did buy a set of used rims with tires
for it last spring. The tires on the rims are 245 60R X 14. When the car was on floor stands I put the tires on the rear and they looked GREAT. However, Yesterday I went to A & A and picked up the new tires, same size B F Goodrich tires. But, in comparison the new tires looked massive compared to the old ones which are Cooper tires. Any advice from anyone is GREATLY APPRECIATED! It's a plane Jane. So, no racing. Thanks for looking, Exponder

The other question is will the fit on the front? I didn't try to put them on the front so, Maybe they will rub.