Crash's 69 K10

[70K10Hunter]

I went to buy some supplies at my local paint supply store(primer,POR15,more sandpaper,etc. etc) and he recommended 3M brand All-around Autobody sealant #08500 it is in a caulking tube it is white. The guy says it's paintable, it wont harden like a rock but it will stay pliable somewhat? he said quite a bit harder than say RTV sealant.if thats any kind of reference? I will be getting my bed floor sandblasted probably next week then POR15 then assemble it. I'll try it and let you know how it goes.