I just want to note that there isn’t a BBF head on the market that uses “BBC oval exhaust ports.” This is not a matter of semantics, it’s a fact. (The pattern for the header flange is BBC, however the port is not.)
I stand corrected, as I stated I'm a newbe, just learning the BBF. I was going on the look of this 632 with A460 TFS heads. Ports don't look like "D" to me.