[Dirty Harry]

The car is certainly a Shell Valley. The tag is certainly an internet-sourced novelty item. I have a 25 year old home-built Shell Valley car that I still love to drive. They're decent cars, especially for the price. Judging from the photos, I'd say the price is in the general ballpark (maybe a little high), but only a test drive can tell you what you really need to know. Providing that 390 is well-built, it is fine choice for that car. The 4-speed is no big issue if the rear axle ratio is appropriate. You can enter the Cobra hobby for not a lot of money with this car. If you later want something more sophisticated, there are plenty of pricier cars available all the time. The guys at Shell Valley are good guys, too, in case you ever need anything.