Back to the Ebay 646 heads from a couple of pages ago. They are 360 heads, an alternate casting to the 308. So, not applicable to the 273 or 318.
Vendor typical problem of "It's Mopar smallblock all parts interchange".
That forged crank is really ugly (shudder).
Nice to see that the powers that be aren't making 273s run the extra heavy pin that was stock in the 273. Also rod minimum weight is some 60 grams lighter than stock.
