I'm doing the GSX upgrade and am wondering about the difference a GSX booster would have over a stock 2gnt one. My backup manual says that there is a 6.5 boosting ratio in the GSX, GST, and the GS's with ABS compared to a 6 boosting ratio on the RS and GS w/o ABS. Is this even a big difference? Is only pedal feel going to be affected and no braking performance improved?

Brake boosters are expensive $212 from satan, and autozone priced a Cardone one at $152. So I'm not going to waste the money if there is minimal gain. What should I do??

I do not think that upgrade is worth the money, or rather, that kind of moeny can be better spent elsewhere on the car. It is up to you however. I am not a big fan of Cardone (remanufactured parts) though. I believe the biggest braking improvement can be made with the GSX upgrade as well as the GSX master cylinder upgrade.