I would contact Any magnaflow help line. Im pretty sure the customer support is good.
Its bends look like Euro manifolds, so since those fit , these should as well when used together.
Surprised that they dont fit with exisitng manifolds. I've seen e46 guys having to shave down some metal on one of the manifolds, that was the only issue mentioned.
128i Sport 6MT converted to Euro 130i spec, tuned by evolve ~220 whp 207 wtq(ft-lb) SAE
In-progress: e46 m3 trans mnt, e36M lip Wishlist: m3 susp, n55 eng mnt, headers, LSD, finn dif e60
"The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is