Get it working electrically I supposed ?
Yes it's very easy but I am running full manual at the moment.
At first I did it with push pull switches. The solenoid controls are just grounds and you need power to the solenoid (12V).
Now I have a TCM820 which as the ability to auto shift via RPM sensing. But the RPM sensing is erratic so I shift manually.
With the TCM820 I can control line pressure via a knob. I run full pressure because I don't drive the car on the street very much.
For making it work via the stock PCM I think you have to invert the signals but turbocharged400sbc could answer this better I have not attempted to do ECM control.
As for the Bonneville subframe it would have been probably a better choice but there are a lot of things to verify for compatibility for the knuckles and suspension. swaybars etc...
I had all my mounting points done it was quicker to redo the mounts. Also it was already a problem the factory mounts are too sloppy for high powered cars so that had to be addressed. Two birds, one stone.