Scott's '51 Build

[Scott2]

I just cut out the rear floor brace in my cab - it was cracked and in the way of seat belt mounts. I already added a couple of under floor 1x1 and 1x2 cross braces and plan to put another 1x2 under the rear.

My question relates to the bolt plate for the rear cab mounts. It was hidden behind the cross brace but now is sitting all alone on top of the floor (pic). I suppose I can trim the bolts flush, go around it with Dynamat or similar and then lay carpet over it. Anyone have better ideas?