I don't mean to be a poop about the tunnel ram, in truth aways thought it would be fun, and back in the 70s I had a freand with one on a 440 that worked pretty good.

And back in the 70s to get 650 hp from a 440 you would have needed a tunnel ram but not today, a 950 or 1050 Holley and a M1 or Eldelbrock will get you there.

So the old tunnel ram is definitely OLD SCHOOL COOL and will Make power if you have the parts under it but be slug and no fun at all if you can't make it work!
Otherwise you can put dog collar around each stack you have on the carbs.