Anyone have actual experience with weber DCOEs on a slant?

I have a pair of Asian SU type carbs.....Asian is owned by Toyota....I haven't a clue what they are off.....They have a triangle shaped flange for attachment to the intake.

Those are from an old Toyota Corona with pushrod 3R or 4R engine (1968-72ish). I had one of those cars but in the U.S. we got the standard 2bbl downdraft carb.