Racetech RTROAD if you plan to leave it in all the time. Probably still work with a 3-point belt due to reduced wing height.
RT4009 if you're going to remove it when you're not tracking it.
For the money you can't go past a Racetech. Don't bother with the japanese stuff like Brides, they are made for pencil-width people. And skip any off-brand stuff, NZKW etc are probably not heinous but you get a lot more pedigree for a few hundred $ by going to a Racetech.