Manual to power steering conversion

Hello forum

I would like to convert my '71 Demon to power steering and of course, I need all parts (gearbox, pump, pulley, brackets and so on).

I found this PS gearbox for sale. The seller tells that this part comes from Yearone and has a 1-1/8-inch sector shaft.
Is it compatible with my stock slant-six Demon?




All help will be greatly appreciated.
Thanks
Francois