Are they strong enough?
I want to put an elbow on my inlet manifold, can i just by an ally 1 off ebay or are they too thin and not up to it?
Im going to get a proper firm to weld it up for me but i would like to get the elbow myself and mock it up before getting it done properly.

Or where can i get a stronger one from?
I want a 60mm 90degree bend.
CheerS