That's an Offy 4 barrel intake. Can't make out the carb [never seen one in black -- wouldn't that let it get too hot?] Not sure, but I think those are the cast iron headers Tom Langdon sells @ www.stoveboltengineco.com. I'm not old enough to know what Fentons looked like.
I/I #4101
'71 GMC Jimmy 350, sm465, np205,3.73 posi.
'68 C/10 Stepside 292 (.030 over) Offy Intake, 500 CFM AFB,Clif headers, sm465, 3.73 posi.
'67 K/10 454 project.
'72 K/5 rolling frame project.
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