While putting my console back together, I got a rubber seal set. I thought it was just the 2 that run the sides of the horseshoe shifter, but there's 2 more. Where do they go? They're flat and have no holes.

Two slots for the horseshoe shifter. Rubber on the inside AND outside of each slot for a total of 4. Just did it on mine.

Great. How to the inside ones attach? I have the ones with holes attached to the console itself on the outside, figured they were inside after looking last night, but didn't have enough time to figure the other ones out.

There should be some retainer strips. If you need them, let me know. I might have an extra set.

I've got the metal ones to hold the strips to the inner sides of the console if that's what you mean. Those strips are in.