arc car parts

arc car parts
Welding or riveting?

The floor on my car had some rust holes.I cut out the rusted parts out,grinded everything to the bare metal.Now i need to cover the holes with some 3 mm thick steel plate.What should i use to bind it?I have an arc welder and i have pop rivets (blind rivets) It has to be one of these two optiones.
Not so sure,since wikipedia sais “Blind rivets are often avoided for critical structural joints because they generally have less load carrying capability than solid rivets. Furthermore, because of the mandrel they are more prone to failure from corrosion and vibration.” Which one should i go for?Welding or riveting?Any other tips?

welding is the only choice…you can use a few rivets to hold the patch in place while you are welding but that is about all they are good for

Fukuoka Drift Fukuoka Japan…….Yahata All Mighty car project!