I have the 273 commando and although mine came with dual exhaust, I have purchased the system to replace those with the single exhaust that the car left the factory with. Again, you decide what direction you with to go with yours. I have a friend who has one that has been changed, with a 360 motor and custom interior and the car really is awesome, just wasn't the direction I wanted to go.
I'm sure I will get a lot of comments about drivability and such, but mine isn't a drag car or maybe not a show car, but a fun car for me to enjoy. Funny the comment about Job, I don't know if I could have the faith to endure all that he did. I would hope that I would! If you are married and your wife just isn't into classic cars, it can make life interesting.