Quick connects for coolant reusable?

I have a '99 project car with the 3.8 in it and I am trying to put back together. I am curious as to if I can reuse the quick connects for the coolant or if I should just replace them and be done with it.

I would assume the fuel connects can be reused as well.

Anything to look at as far as them not being reused.

I pulled them out to replace the evap/heater core box as it's broken and noticed that one is pinched and possibly missing an o-ring. Can anyone confirm this?

http://i264.photobucket.com/albums/ii175/gmintimidator/1999%20Questions/99HeaterHoses.jpg