Hello! I just got my first rx7 it’s not my specific dream model as I’d like a t top but I have a convertible hard top, I’d like to have it be a practice drift build but I have to redo the entire interior first before I even want to try to change anything mechanically wise, I was wondering what would be a good site for bucket seats, racing harness, new vents, dash, door panels that stuff any info helps though thank you all

 

Welcome to the club.

Seats and harness could be anything from ebay or summit racing, depending on your budget and desires.
For mazda specific parts, mazdatrix has a good inventory on what's still sold new for these. Anything else you could find used on facebook groups, ebay, or on the marketplace here. Good luck.