327/3onTree for a 350/700r4 swap

[67see10]

I am in the process of swapping out the 327/three-on-tree for a 350/700r4 swap in my 67 Suburban. I had a few questions in regards to the swap. There are two salvage yards in my area that has tons of 67-72 c10 and a few suburbans. I was planning on going out there to pick parts.

1) Can I use a automatic transmission cross-member out of a truck or suburban for the swap?

2) Am I okay to use any automatic column shift steering column from a 67-72 Truck, Suburban, etc?