Call it whatever you want but it's registered , insured , lights work , directionals work , wipers work , full interior. I drive it to every show , cruise night , we take it out on our date nights. runs on pump gas (11/1) . So I rev a little with 4.56s , big deal. It's a street car. I also take it to work.
Well then, you will have no problem building a 12/11 second 273. I had 4.10's in my 64 Barracuda for about a month. Not my cup of tea, no traction and not fast enough at the top end.