[Excaliber]

Top one, Tunnel Wedge, I've heard that name but have never seen a good pic of one. Perhaps tunnel wedge is another name for Tunnel Port, which has ROUND ports (by the way). Bottom 2X4 gotta be high rise, mediums have a heat cross over tube missing on the high rise.

My High Rise came off a Thunder Bolt car, 2X4, I find it quite acceptable on the street given the right carbs. Hood clearance, engine mounts and air cleaners ARE something you have to deal with. It BARELY fits.