Not sure how it would look, but 275-35-18 is a tire size with a huge amount of choices. I have them on my car - I have some more "streetish" Continental ExtremeContact DW tires (IIRC 340 treadwear). There are several amazing tires in 200 treadwear available in that size.

My opinion is also that 18" wheels are the optimum size for a 25-27" tall tire in a handling application.

'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip