It appears you have 3 center carbs there. That's not going to work well, but you can always swap the float bowls to the side-hung style to allow for more room between carbs. I have two pristine sets of the DC carbs for sale if anyone is interested.
Yes, 3 4412 carbs. IMHO side hung just don't look right. And yes probably a tuning nightmare but not much worse than the typical double pumper carbs.
I like the look of the traditional float bowls too. After several decades of car shows etc, I realized virtually no one ever attempted to look under my Shaker hood to see the beautiful sixpack any way, so now I'm abandoning the sixpack and running a single 4150 throttle body and multi-port EFI. EFI is soooo much nice from a drivability and engine life standpoint, and you can't see the set-up with a Shaker air cleaner anyway.
With the wide-band gauges available, tuning has become much easier.
