Anyone actually running 18x9.5 fronts with 6.5"+ BS?

You haven't accomplished anything after bolting on these parts.
You don't have your ride height set with you car on the ground, so you can't have camber, caster and toe set...

With 1.14" torsion bars you won't experience 5" of suspension travel like you show.

I can only tell you that a 18x9 with +30 OS should fit a 275/35/18 tire on the front. With your Dodge D100 rotors and first gen Viper Brembo 4 piston calipers you will need a rim that clears those.

You don't need to get a 9-1/2" wide rim to mount that tire. Unless you like to have curb rash on your rim lips?

Who's 17x4.5 Race Star 92's are you using in the pics?

And it looks like you waited to have the car painted to find rims & tires that just fit? That's backasswards.