I removed the battery, found the big grommet with the nipples on it to cut off. I sliced one off (and half my finger), and figured that was that. Poked a screwdriver through on the engine side.
Found the grommet in the passenger side, but no sign of the screwdriver.
Gave up at that point.
So I think I was 99% there. I can't get the boost tube through on the engine side, so I wanted to push it through on the passenger footwell side. Doesn't
help that the sound deadening is in the way and really tough to shift