You'd be in the 14s with that stuff for sure. Instead of the VB mod, maybe consider a 5 speed swap? That'll probably end up being a little quicker. I know your post was titled "ultimate nonturbo max", and I've heard about the reliability issues of the supercharger, but what about a turbo? I've heard the turbo kit makes more hp and is more reliable than the stillen sc. Even without boost or a 5 speed, that'll still be a really fast setup.
By the way, 89Turbo944, sweet Z.