it is murray part number 433259 for a 65 mustang 302
the other one I looked at was murray 433340, 67 mustang, it was wider and taller but thinner, I went with the 65 so I had a couple extra inches to move it around. the 67 looked and measured like it would bolt right into the 41 core support.
up till now I had only placed the steering column by critical measuring, I hosted a family dinner today so not much truck work but I DID throw the extra dash I have in the truck to check clearances. I shouldnt have worried, I measured everything so exactly and used a plumb bob to place the column, it has 1/8" clearance to the bottom of the dash and is centered exactly on the original column mount holes.