18" tire sizes-need 12" wide/28"tall
 

The 315/35r17's on my 71 Nova look to short to me and dont fill the wheelwell very well. I think a 18" rim and a 28" tall tire would look better. Seems like all the wide tires are 26" tall.

Nitto 305 18 drag radial

Actually the Nitto 305 45 18 is almost 29"...I think it's 28.78" if I remember correctly. Section width is 12.02" on a 10" rim and puts about 11" on the pavement.

And I'm a Nitto dealer, so let me know!