hey i'm going to buy a ground fx kit in a couple weeks for my car how hard is it to put on? and how hard is it to put in a 4th gen firebird dash?? and how costly?

 

4thgen dash... not far from this post...

https://www.thirdgen.org/techbb2/sho...hreadid=120831

If you're buying a kit, something like a Kobel... not OEM, I'm sure it would also include instructions instead of leaving you to dig up your own harware & guess at how to apply them.

Ease of application varies by the manufacturer.

 

the ones i am getting are oem the are of a car

 

In that case, not to hard, as long as you get everything that held them on to the original car and access to a welder (or someone who can) for the rocker brace piece.