275/35/18 front and 315/30/18 rear on a stock '69 Chevelle?

[gnx7]

Thanks for the input! Good call on the lower shock mounting points. Will remind my fabricator about that.
I have Global West front tubular A-arms also.

What would it take to fit an 18x12 and 335 out back? I assume modify the frame rail and mini tub?

[Che70velle]

Originally Posted by gnx7

Thanks for the input! Good call on the lower shock mounting points. Will remind my fabricator about that.
I have Global West front tubular A-arms also.

What would it take to fit an 18x12 and 335 out back? I assume modify the frame rail and mini tub?

Yes sir, the tubs and frame rail would have to move inward. This is doable yourself, or there are kits out there. ABC Performance offers one.
I have seen guys pull the quarter outward to gain an inch or so, also.