Small block intake

IMHO, For your application I would think a stock 340 intake with a stock or edelbrock spreadbore carb is what your looking for, but you did say aluminum.....
I agree a stock one works fine and is cheap. TQ does work nice 71 up manifold and do block off the heat riser. Or you can use a earlier one with a avs carb. (eddy ) or a small holley. If your going to be running 70 I'd leave in the 2.76's for fuel economy. If you ever want to wake it up remove and cut the heads that 360 has no compression. And second as a stocker just put the stock 340 cam in it. It will run real nice.