I'll add my 2 cents
I've been running the crx recaros in my car for years....I had themm redone and installed in my mustang and when I finally forund a set of schroth inertia reel harnesses for cheap I installed everything. My mounts are built around the same lines as Jay's. His came with mitsubishi latches. Mine didn't and I didn't want to mess with the factory seatbelts. Sometimes I wish I had. 5 point harnesses are great for racing and long drives but running all over town and hooking them up everytime gets old. I mounted the inertial reel under the seatand the sholder straps run up under the headrestsand then wrap around my chest this isn't the best way. The reason being that during a crash if the mounting points are that low they can compress on your spine as in Harry's post from RCI. There is about 3 inches of seats from my sholders to the belts and the seat is steel inside so I'm not really worried ablut spinal compression, but dependant on the seats and your height this could be a problem. If any of you go with aftermarket seats and belts. Consider having factory belts for everyday and harnesses for playing.