Let's see, you had/have a Toploader and you are going to a slave Hydraulic. Okay!
You should visit Pegasus Racing at:
www.pegasusautoracing.com
Order a Tilton Master cylinder kit, with a .7 bore.
The slave is the .87 LH.
PN(s) are: 3505-.70 for the master and 3520-.87 LH for the slave.
You will need to fabricate a bracket that uses two or three holes on the bellhousing to form a mouinting surface to allow the slave to be bolted to the power train.
I think I gave a dimensional on the pedals. I used 1/2 " from the fulcrum as the pivot point for the master cylinder and I had something like 6" for the pedal pivot point. It gave a force of 240 pounds for 20 pounds of foot pressure.
I also mentioned the fork was case hardened and will most likely have to be cut, use a diegrinder with a cutoff wheel.
John, can you remember anything else we discussed???