Good luck with them, but like others have said, racing equipment isn't the safest thing to use on the street. Better off with reclining seats that you can use the OEM seat belts with. Racing harnesses are designed for cars with cages that prevent the roof from collapsing during a rollover. Stock seatbelts are designed to allow your body to lean forward in case of a roof collapse, racing harnesses (even properly installed) will hold you upright in your seat and you'll end up with spinal injuries when the roof hits your head. They do make DOT approved harnesses that have a breakaway system for the inner shoulder belt, but they're expensive. Also, if you use a 4 point harness you have the risk of sliding under the lap belt in a frontal collision. Stock belts don't have this problem as much because you lean forward slightly and your body kind of "wraps around" the lap belt. That said, stock belts are a PITA to fit to non-stock seats. The buckle is part of the seat, and is more complicated than it seems (it has a whole slider bar arrangement because of the sliding seats), it requires some fabrication to refit to any other seat.
I'm too poor to afford racing seats, so I'm putting the stock seats from my old eclipse in mine. They need custom brackets, but the seatbelt part is nearly a bolt in deal. Other than being free, they are supportive, comfortable, weigh alot less than 70 pounds, and they just look good... something the stock seats only did in 1987.
