Quote:
Originally Posted by The Nightman
I'm almost certain the mounting pieces are bonded to the frame rather than welded.
But I wouldn't stress about those braces and focus on the subframe first. Even the M3 doesn't have those frame rail braces:

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See the attached photo. They seems to being electrical welded.
there is not enough surface for bonding IMO. But maybe with some rivets + bonding could be a good tradeoff.
I don't stress

but i would really like to do something close of as the New M ( Fxx Gxx) bracing .