That's how they were advertised, for sure.
Port and chamber shape were OEM magnum only with larger ports. By how much, I don't recall.
I do remember however, that dog leg at the bottom of the turn wall enabled some handsome flow numbers in the mid lifts.
The RHSs were virtually identical. I think they went 272 cfm with basic bowl work and a proper valve job.
I'll have to see if I can find the EQ flow tests..
