those with aftermarket clutch in there RX3
 

so im going 13bt in my 73


and i have a really tuogh ACT aftermarket clutch.

what master cyl should i use to beef up the pressure?

Im running a Action Clutch 4-puck clutch and 3200 lbs pressure plate on a stock clutch master cylinder. Whats the specs on your heavy duty clutch.

..
 

i dont know id have to find it on the act website.