D can u please elaborate what u mean about the "exhaust short turn radius"

I have a low drop a15 exhaust manifold i was going to use in place of the a14 manifold in order to clear the lynx crossover manifold for single weber that hits the stock manifold.
the low drop a15 exhaust manifold looks a lot more restrictive especially the sharp turn straight out of no 2 and 3 cyls and i was going to try and port and smooth all this and see how it goes, r u talking about the same thing?