I'm swapping out an original 216 from my 52 chevy to an original 235 out of a 62 impala. I;m considering running a dual carb set up on the 235 and I have NEVER run dual carb on anything before so I would appreciate any help I can get. I see dual carbs selling as "primary" and "secondary". Should I run something like this or, what I was thinking, I could run the smaller 1bbl Rochester from the original 216 as a "primary" carb and the slightly large 1BBl off of the original 235 as a "secondary" carb. If this setup is do-able, would a progressive style linkage or a simultaneous linkage be better? I would think in my un-knowledgable opinion that progressive would be best. Also, would both carbs need to be choked? Again I would think only the "primary" would need a choke. Thanks for any advise, info, tips and pix.