Yup, I was bored and wanted to know what the top of my transmission looked like (not really, I wanted to clean the top of the tranny and T case) so I removed the transmission hump. There were two types of sealant. One that was between the two lips (floor and hump) was red. I thought it was rust at first, but I believe it was red foam. 30 years later, it didnt look like foam. That was probably there to prevent metal on metal squeaking. I took a wire wheel and got it all off and cleaned up the lips. The second sealant was a white-ish rubbery compound and that was applied after the hump was bolted in. It sealed up the edge and was harder to remove. I had to use a razor blade to get most of it off. That was probably to keep the mud/snow/oil/water etc out.
Any suggestions on what I can use to put it all back? I was thinking of doubling up some foam that comes in a roll and has one sticky side and then using a glass sealer on the edge after its bolted back in.