Part No. INT-403 .
The intake is offered with the 4 degree power angle and cut flat.
Normal OEM heads are .315 up from the bottom of the head and 1.97 tall. Most of the aftermarket heads are .365 to .400 up from the bottom and 2. to 2.1 tall.
PME has designed the port to be .4 up from the bottom and 1.9 tall. So, for an OEM you would port down and for the After market you would port up.
The carburetors for this manifold will be Holley 0-1848-1. The carburetors will be mounted backwards to make more room and make it easier to install.