Anyone swapped all factory x members for aftermarket tubular?

[Jl8806]

I keep pulling out factory crossmembers and replacing them with aftermarket ones and I'm kinda wanting to just go ahead and do the rest of them but I'm kind of concerned that maybe it might be weaker than the factory one, for instance the factory shock x member is riveted on the top and bottom and the aftermarket ones I've looked at just bolt to the bottom. I'd like to take out the flat curved one under the core support but it seems a lot stouter than the one that bolts in with the core support mounts.