I did it!! 325's on the rear of the 65 dart(barely)

Got these tires for a mock up on the rear. Man they look bad *** but i think i may have to go with a 315 or maybe a 305. There is enough travel in the fenderwell but i dont want to chew up a new set of 450.00 a piece tires. Whats the biggest anyone has stuffed under a 65? When its lowered im going to loose a bit of width clearance. For 1 goodyear f1 was 516.20 an f-ing piece. Whats the widest on the front i can go without running into turning interfearance. Your comments are well appreciated.