Just thought I'd add, that when I used to race a 1st gen RX-7 in the spec pro-7 class, we had to run stock brake calipers and rotors, and were only allowed one 3" cooling hose to each front caliper. Being on a budget and in a little crappy town with no performance shops I found that the valvoline brake fluid held up the best and you can get it from Schucks, Checker, whatever u call them. It's in a gold bottle and costs $7 a quart. It's also DOT 3 and 4 compatible unlike some of the racing stuff which is DOT 5 only and can't be mixed with others.

 

I just started running Valv. syn. fluid today...pedal still feels a little firmer, did all the brakes except lines.