If your talking about Chevy 37's 2-4 setup, his setup is not a tunnal ram, it's a regular manifold. If you want to run a tunnel ram, it's going to be soggy on the bottom end but strong on the top end, and your going to have low vacume, I know your car has power brakes, and you need good vacume for them. And a big cam with the barely running idle dosn't make sense for a street car, because thay type of cam would run around 4k-6k RPM, and would need at least 11:1 comp for it even to make sense, it is otherwise, the cam of that size could hurt the HP, not gain it.

Shure a tunnel ram would work with the correct tuning, but is it going to be better than a dual plane single carb, for street use, probably not. there is a way you could make a tunnel ram look, using a tunnel ram and 2 old identical carbs you can make look decent. get a good dual plane, then get a bare tunnel ram ( Ebay should have 1 ) cut the manifold bottom out of it, and fabricate somthing that goes over the dual plane but still look good, gut the 2 carbs with a dremel ( make them open tubes basicly ), mount them on the tunnel ram, then mount a single carb on the actual manifold, and you could fabricate yourself a funnel type thing, that could funnel air into the carb from the 2 fake carbs. mount your hilborn scoop ontop, cut a hole in the hood, and you got forced air induction, which will increase HP to some degree at highway speeds.

I think your only hearing what you want to hear, and not listining to anything that does not support your idea, which if you go along with, will be very unhappy with performance, and then you will be 1 of those people saying don't run the tunnel ram, because you will know from first hand experience