Re: DIY Rear Disc Brakes- Gen 1 xB...yep you read right!
I would defiantly recommend swaping the prop valve out. I'm not familiar with what the TC's distribution it but something with four wheel discs will be better than our stockers for sure. I'd try to stay in the Toyota family just because the line routing is going to be similar. I know The Integra RS Has a true 40/40. Its an easy swap. Just need a flare nut wrench should be 10mm, a 40/40 prop valve, a Jug O Brake Fluid and an extra foot. Swap it out and do a nice full brake bleed. I like to do a full system bleed every year in a half or so just to keep it fresh.