Great updates, as always! Love the progress. As for the cable bushings, there are a few options. 2 different pipe sizes (one for bushing and one for the surround of the shifter cable) and a portable mini vice. You can use a good ol' hammer too, just make sure you don't kind the shifter cable. And I forget another method I used once. But those two will do the trick.

Catch can sounds fun! Any ideas for mounting places and can dimensions yet?