Avenger combined manifold

[Fred]

Does any one know if the combined one piece inlet/exhaust manifolds have any issues ,the steel all in one for twin weber or dellorto carbs. Are they worth using or not. I'm tossing up whether to use the all in one or a alloy inlet.
Cheers

[JoKer]

heavy vs light

cheap vs 'perfoamance'

I'd get the ali if you can