rear tires on a stocker 67 camaro
 

I wanted to know what is the tallest tire we can get under the rear end in a 67 camaro with it not sticking out of the wheel well we have a 30/10.5/15 on there now can we go taller are wider? we have a 400 with a p/g 176 gear with a 5400 stall with a 488 gear and shifting at 68 and going thought at 7400 need help. we are think of putting a 196 low gear in the trans with a 456 and keeping everything else. input helpful!!!!!:D