4x2 Man-A-Fre Manifold Question ?

I have found a Man-A Fre 4x2 manifold. I want to run this with my th350 automatic trans. I am currently running an offy 3X2 with progressive linkage pulling my vacuum from the center carb. My question is which carb should I run my vacuum from, or does it matter? I tried searching past threads, but no luck.

 

Any of them,the back ones toward the firewall would look cleaner cause the lines more hid.

 

Can you really get enough vacuum from a Man a Fre to run an automatic trans? They were made for competition.

 

My understanding of that manifold would be that you'd need to run non-progressive linkage since the balance passages are so small. So I guess you could pull your vaccum from any carb, but as noted, one of the back ones would look better.

 

Thanks for the input! I appreciate it.