We are building a 363 for a 85 carbed GT with a faceplated TKO600. My question is concerning the rear end. We have 8" welds for the rear. We will be racing on DR's and was debating on a 275-50-15 (10.5 wide by 26" tall) with a 4.10 gear. The other choice is a 255-60-15 (9.5 wide by 27.5" tall) with a 4.30 gear Both gears calculate that they would trap at about the same rpms, so which tire/gear combo would work the best for hooking up? One concern I had was, would the 8" rim be too narrow for the 275-50 and pull the sides of the tire up so it wouldn't hook? So I guess I'm asking, is it better to have a wider/shorter tire with less gear or a taller, narrower tire with more gear? Any pros or cons you see would be appreciated. Thanks!