Hi All,
Bought Dougs 447D453 headers for the 273 in our 67 Barracuda.
https://shop.dougsheaders.com/doug-...-coating.html#product_tabs_description_tabbed
Then came across a 340 with X heads to buy. I was told that the port shape may be different. New to small block Mopars, will I have a problem with port matching or installing the headers in general? Thanks!