As I was doing the ls1 brake upgrade, I noticed that the writing on the front springs was upside down. I looked at the back springs and the writing is right side up. What I was wondering is it possible to put the spings in upside down and is it something that I should correct.

 

Due to the pigtail on the top of the front springs, it is not likley that they are upside down. It would be terribly difficult to put them in incorrectly (nothing's impossible if you try hard enough).

 

Ditto for what TB said.
If it was actually upside down pig tail would be obvious to all to see.