6 spd swap progress

Just out of curiosity, is the stock upper crossmember section welded to the floor pan in any way (spot, seam, etc.)? Been looking through several different trans swaps and the tunnel mods and on some it seems like they aren't joined in any way from the factory. I was planning on plug welding the floor to a replacement crossmember or something to help add some rigidity if it wasn't already there from the factory.