Adam,
I've got those old issues with Heath's cars, Sledgehammer and the two tone one and those cars were one of the reasons I had to have a Buford of my own. But tire size wise, '03-'04 Cobra's and the last F-bodies ran a 275 tire with good results as well. There's a Mustang guy that just rescently ran a high 7 second pass on a 275/60/15 drag radial so it goes to show you don't need steamroller sized tires to go fast, just fine tune the suspension to work with them. But I could change my mind....:wink:
As far as the brake & fuel lines go I will run that stuff inside the car. Completly custom fuel system and brake system. Bulkhead fittings on the firewall and the lines will run along the trans tunnel (fuel) and the brake lines will go along the drivers floor pan. It may sound weird but a few car builders have done it like this. Look up Ring Brothers '67 Mustang "Reactor" and if you find the build pictures you'll see what I mean.
That's my goal anyway, let's see if it works.