heads id

[plugger340]

I'm looking at a set of heads but I'm having a hard time IDing them. They are from a magnum SB, advertised as a 360. One head is 53006671 and the other is 53020466. Any help is appreciated.

 

[damnimcooltom]

318/360 Magnum heads. Supposedly identical. The 466 replaced the 671.

 

[plugger340]

Thanks muchly