12 Second N/A Slant 6?
As far as gearing, I would gear the car to run about 200 RPM past peak HP RPM the traps.
Steetable means that the car will pass inspection & can be driven on the street W/O extremely bad manners.
This woiuld not be a daily driver in the sense that I would need it to comute.
I am retired & my '06 Charger is extremely comfortable for daily driving.
It turns 12s N/A.
[ame="http://www.youtube.com/watch?v=T-Sbz2Etl_A"]PowerWagon 12.06 N/A Track Day @ Atco Rental 04-13-09 - YouTube[/ame]
11s W/a small shot of juice.
[ame="http://www.youtube.com/watch?v=KhG0KlXEOnU"]Atco track rental 2009 04 13 Powerwagon 11.3 nitrous run - YouTube[/ame]
The Valiant would be fired up occasionally to cruise & maybe be pressed into livery service every now & then.