17" wheel and tire combos for 67-69 barracudas

17" x 7" 4.5" bs. Front
17" x 8" 4.75 bs rear.

If you go with an aftermarket or stock disk brake setup from 73 up then you have to account for the extra half inch (plus) on each side due to the spindle change. That being said you would need to increase your bs on the front by about .5 inches to clear the fenders.

If you want to run through Pam's Jamaican Blue Baby build http://www.forabodiesonly.com/mopar/showthread.php?t=122153&page=11
(post #263)
you will see the mistake/issues I had. Others will say that the difference is more or less, but I measured and the reality was closer to 5/8" - 3/4" on each side.

Measure many times and order once. :D

Good Luck