after talking with planted, their brackets will fit the following after market seats
Bride, Cobra, Corbeau, Momo, OMP, Racetech, Recaro, Sparco, Status, and more from what i believe... but those are the majors!
When installing an aftermarket seat you will need a slider, or side mounting system. side mounts are for fixed seats and will not move unless you physically un bolt and move. sliders should function just like your oem sliders and allow for from to back movement. under your slider needs to be a bracket.
from my research brackets per seat will run roughly $120-150 and sliders will run right around $100. Most seat manufacturers will toss in sliders for free if you ask them! I hope this helps anyone in the future looking to install seats!
mounting should be as followed
SEAT
SLIDER OR SIDE MOUNT
BRACKET