Door mod and rubber body mount ?s

[super_kev]

I'm looking at getting some new doors for my '70 CST blazer, and the doors I have in it now have the little screws below the vent window. I read that these are supposed to hold to door together so it doesn't split? Would it be worth it to do it to the new repo doors? Does anyone have any pictures or tell me how to weld a little bracket in there?

Also, my body mounts are shot. I'd like to get some new rubber ones. I know they won't last as long as polyurithane, but I think it would be easier on the blazer body. So has anyone used rubber body mounts? I see that GMC Pauls and Early Classic Enterprises has them. What is involved with replacing body mounts?

Thanks.