No, you need to weld it. The floor ties everything together, the rails/torsion bar crossmember to the firewall, etc. Mig is really the easiest way and probably 200 plug welds to do if your doing a full floor. Not really a place where I would short cut the job.The bonding and rivets is typically aluminum construction, and like Mercedes, they use 7 or 8mm titanium rivets.
