A quicdk primer on "race seats"...
Reclining seats are NOT race seats, despite what the manufacturers call them, and they will not pass tech for any true racing class. They are, however, great for the "race look" in a street car.
Fixed back seats essentially come in two flavors: FIA certified and not. The FIA seats, at least in road-race applications, do not require a seat-back brace for mounting, for the first five years after construcion (date code on the seat), but the non-FIA seats will require a brace tied into the roll bar.
Construction is the other major factor. There is a tube-style, which is the same way stock seats are built. These usually have foam pads that are upholstered as part of the seat, and are entry level, being hard to find mount points. Next you have injection-molded seats, with an attached upholstry that may or may not be padded. The material may be glass-reinforced, and these are fairly strong and lightweight. Aluminum is another popular construction, also with an attached upholstry. Very simple to mount, as you just drill holes for the bolts, and you're done. The last, which is the priciest, is the carbon-fiber molded seat. Weighs virtually nothing, but costs a ton.
Best source of info on what you need is the rule book for the series you are planning on running. I've seen a LOT of junk on Ebay, and you really want to sit in the seat before you buy. Make sure the seat fits you well, and that it will be comfortable and will hold you firmly in position. I've also seen a lot of knock-off junk on Ebay. Bride seats are a perfect example. The REAL ones are made in Japan, and are extremely fine seats, but there are at least a dozen vendors selling Bride seats that are made elsewhere in southeast Asia, and are not even close to the same thing...
Last thing to consider is that most race series will require you to change to a five- or six-point harness if you do race seats,
and that in turn requires a rollbar to mount the shoulder harnesses to.
I went with
Ultrashield seats, but if you really want no-compromise protection, check out
"The Joie of Seating..." Just let your wallet whimper a little bit before you log on to their website...