Already have them in my cart and they can bend up the inner plate so bonus there. But I decided to push pause and 3D print a test crossmember. I've already made a couple of changes and have one more I expect to need to do.
Might have done the single inner plate in multiple plates like I am doing for the 3D prints, but getting it bent instead is so much nicer.
I uploaded the outer plate as is and I think their software didn't work it right due to the generous radius I used. At least my overall length calculation came out different. So I did up a flat plate with the notches it needs and will use that.
And I think I am going to wait until I have the lower mount laid out and order them all at once, too.