Running two 94's on a 53, I purchased new power valves during set up and after much trial and error found the correct value, just chucked them in my lathe and with a thin parting bit squared off the radius, that was 8 years ago works and seals perfect.
Not worth the trouble, silly putty gears, 6 volt relays that don't work, oil leaks, hard to make mounts, overdrive needs all kinds of connections mechanical and electrical to work proper, get a T5.