1964 LA/904
Hey Don
The 64 is a dual pump so there are 2 intakes. When you replace the filter, you'll need to ensure it has the 2 corresponding holes.
The second pump would actually allow you to pop start the car unlike the later automatics.
The parking lever is a physical sprag bock in that extension housing. So you need the typewriter and the second cable to actuate that.
You can't change the valve body on it. Have to stay with a pushbutton valve body. Actually, you can, but it requires a bunch of welding and modification that is just not worth it