I need to know how wide a tire and wheel size combo I can use on my 67. I need back spacing size also. I would like to go with an 18 X 8 in the front and an 18 X 10 in the rear. Can it be done? The car has the stock rear end and it has a 2 inch drop.

http://www.chevelles.com/database/

I asked the same question months ago. I was told 285's without modification, and 295's if you want to roll the fender... Hope that helps.