Cheap, Nice Aluminum Radiator in 1965 Dart GT

Wouldn't that make a vertical flow radiator even more suspect?

Actually both radiator styles work because the coolant is pumped in and out, and heat rising would be non-existent. The advantage of the crossflow is the positioning of the radiator cap on the out-tank which allows longer high speed engine operation and pressure to build up which I bet for street use is a big nothing.

I think what really matters is that it has much more surface area, its a dual pass design, the shape of this radiator completely fills up my radiator opening and it totally outflows my old radiator by several magnitudes. And its cheap!