Jay -
I've got some closed cell "neoprene-like" foam with an adhesive backing, it's about 1/8" thick.
I put strips along the bottom of the tub on the sides and rear, and also on top of the ZF shifter box and an a couple other places where it looks like the tub comes close.
Having a tub is pretty handy when driving around. I agree your bay looks great.
Rocky
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