If you look at both carb flanges on the LD340 and the Weiand 8022 you will notice that there is 'extra' material down both sides front to rear for the big 2ndaries of a T.Q. or other spread-bore carbs. This is purposefully done.

So the way to mount a T.Q. on either intake would be to take a T.Q. specific mount gasket and trace the pattern to the inside of the gasket on the intake itself and grind/shape as needed.

Or use a spread bore to square bore adapter. I have found that you will need to use a T.Q. mount gasket as a pattern and also grind the spread bore side to 'match' the 850 cfm's larger primaries to the front and outside edges for proper flow and to get rid of flow restriction.
If this is not done, the 850 cfm will perform poorly. If the work is done, the adapter works great, David.