I have a '46 Chevy Panel that is going through a ground up resto/mod. There is no bed.

One of us wants to put a sheet metal floor in first, sound proof it with Dyno Mat and then sandwich wood strips over that.

I say go with wood floor only, and paint bottom with sound deadening paint or rhino shield it.

Is there a problem/advantage with doing either or something else we should really consider? What is wrong with putting a wood floor over a sheet metal one?