I would think you could get pretty close with a stroker setup, definitely mid 600s and street friendly! I need to start doing my research, but 427 ls3 with around 650-700 would by my goal as well.
217/228 .565 cam, th400 swap with 3600 stall, headers.
Vararam intake, GPI tune, new PB soon
Bring on the Bolton 5.0s please!