Thermoquad and quadrajet adapter

Hello All,
Can anyone tell me if the adapter spacers for a quadrajet are the same as a thermojet?
I bought a 1972 340 intake for my 318 and have a Holley 1850-S 600 that would be perfect, but the linkage hits on the left side of the intake and the Holley is a square bore design all the same size and the mounts are wider than the intake mounting holes.
Any help would be great, and pictures so I don't purchase the wrong part.
Thanks,
Chris