I doubt Jon from NC will respond, he's not been on here for 8 yrs. Ive not read thru this thread but can guess whats been said. Ive tried aftermarket hydraulic parts on my 40 in the past and they dont seem to last. You want to buy Aisan or stk Toyota parts. I know they are more expensive but worth it. Clutch masters and slaves fail unexpectedly, youll either have to learn to drive without a clutch or carry spare parts and brake fluid.
I usually carry spares, especially on the trail, but can drive without a clutch too.