Luke wrote:lol floor bar.
flol "JDM floorbar". Yeah thse domestic ones are for suckers
Ok now that I have made fun of you I shall redeem myself with an answer to your question
Real simple procedure.reach under the back seat "seat" about in the center of the sitting position, you should feel where a clip from the seat attaches to the floor. Put a hand close to the clip on either side and pull up. do the same on the other side then tilt the seat up and pull it out, discard j/k
remove the sill plates at the bottom of the door openings, a phillips-head screwdriver is all you need.
Now the two back seat trim panels under the quarter windows are just held in place with plastic clips, reach under the bottom and carefully pull them off, one at a time the clips should pop loose. It's just plastic man so take it easy, I have ripped these things, I have a lot of pent-up anger though.
Now the carpet isn't glued down so you can flip it forward and get the bar mounted. tuck the carpet back under and locate the points where the bar will pass through the carpet and cut ot clearance with a razor blade.
re-install the trim and seats.
Just thought I would point out that that bar should have two saddles to bolt it down to the trans tunnel. It may not have one but the nice ones do.happy wrenching