Anyone know if they make aftermarket seat brackets for our cars or am I going to have to have to make/ have some made?

Was going to upgrade to the 04+ and call it good but found a deal on some sick Sparco seats I couldn pass up. I can just have some made if I have too but it might be cheaper if a company already makes them. Google didn help me much as it just took me to a bunch of universal seat sites.

Thanks bros


-Jarred