I highly recommend using solid mounts. I went with DSE\'s 1/2" drop body mounts. They have regular height too. They inter-lock so it helps you keep the body straight on the sub frame.

I did it when the motor was out so the front was a lot lighter. Use a lot of jack stands as mentioned and do one side at a time. Also make note the tallest ones go under the firewall and the thinest go at the rad suport.