A-904 Interchange

Will do. The car seems to be original/unmodified, so if it's a 318, it's still dressed as a 273. It also seems to be a fairly low-mileage car for it's age.

I'll probably just live with until the future 5.2 Magnum swap (someday). But this little motor won't die – it just runs better and better the more the car is driven.