Help buying new valve cover gaskets

Hi i need to replace my valve cover gaskets for my jeep liberty 20058 3.7 Limited , but i have a doubt about which one to buy.

i see there are two kind of gaskets one thats flexible and one thats rigid, which one should i buy?.

Flexible:

https://www.rockauto.com/en/moreinfo.php?pk=1135927&cc=1430900

or

Rigid

https://www.rockauto.com/en/moreinfo.php?pk=916856&cc=1430900

Thanks!.

the flexible one is for plastic valve covers.

the rigid one is for steel valve covers.

ok got it, so i just touch the cover to see if they are plastic or steel?, if i remember well they are plastic.

An 05 would have plastic.