I think a flat piece will be good because the blank has the rolled over edges to accommodate the clips.The bolts you see in the pictures are made up as mine were gone so the bolts were welded to a piece of sheet metal and there are slots in the back of the plate were you can slide them in .The plate does slide around on the clips and if you look closely you can see scratches were the plate was on the dash and the it was not on centre.


1954 Canadian GMC 9300
"The Journey"
Follow in the DITY