Taking apart the front end on my 70 swinger

Thanks Ironracer, the Power unit is original to the car 1970.
I have 2 possible choices for the manual boxes, however I'm not sure of their years. One is on a 67 k-member, I assume it's a 67 & I have another but it's 150 miles away so I can't measure it now. I suppose I'll just change it out & see if it works.