I recently traded my S4 for an 02 S8. I'd really like to replace the head unit but can't find any install kits or posts of anyone who has done it? Any ideas?

I tried the Metra A4 and A6 kits but they don't quire fit. Any help would be appreciated.

 

I have no idea, what has searching on google come up with?

 

Google has nothing....it's like I'm the first one to ever try it...which can't be the case.