how hard is it to replace to the springs in the rear hatch?

 

They are not springs but Gas Struts. They are not hard to replace with the right sockets & bits. Just remenber that hatch weighs in over 300 lbs so keep it supported. The cost of the replacements vary from $25 to $50 each and you will need two.

 

Cheapest i can find are 37.50/each so i just keep a piece of wood in my trunk.

 

I bought my struts from pep boys about 3-1/2 years ago for about $40.00 each!