Im not concered whether it works or not. I'll plug the lines with silicone. Its for optics really.

We have had problems in the past up here in the great white north with our MTO guys (same as you DOT guys) pulling over classic cars and looking for pollution control stuff. Things like egr's, charcoal canisters, etc.

They look to see if its on the car but dont test to see if it works.

As a result I just need one that will fit and not interferre with with carb linkage.