Safe rear jacking points?

[hjl]

The summer is over and fall only lasts a week around here, so winter should arrive in a couple of days. I'm not going to drive my blazer in the winter, I don't have a roof yet so that's not a hard decision. I figure now would be a good time to work on it.

Anyway, I've decided to try and swap the gas tank myself -- I'm not good or experienced at fixing cars -- but I've got a friend who has swapped a tank in a similar vintage C10 who can help.

I've got most of the parts I need, but I realized I don't know safe places to place the jack or the jack stands in the rear. I found this thread:

http://67-72chevytrucks.com/vboard/s...hlight=jacking

So, help a newbie out, where are safe jacking points on a 2WD 71 Blazer?