Score! What did I do?

No, I know it's a 273. I found the stamp.... It says it was made in Dec. of 64.
But, I looked at the heads again, and I believe they are just plain 318 heads......I'll try to find a number tomorrow. The only Mopar engines that I have experience with are the Poly 318 and the Slant Six. My 72 has a slant six with a Schneider cam, 4-bbl., ect. It's fun, fun, fun! People always ask me what size small block I have. :cheers: Some uneducated people have asked me where I found a 383 Dart. LOL.
But about a month ago: Rain + Cell Phone + Careless driver = Smashed rear of a '72 Swinger. :(
So, I plan on fixing the Swinger for sure, but I saw this Valiant, and I was hooked. So, I guess I have another little project.....
I found a CompCams 268 Xtreme Energy hydraulic cam and lifter kit for $180.00.
Hmmm.......