I've only just received them yesterday. Unfortunately, I have not had a chance to install them yet. I will install Dynamat in doors and rear bulkhead at the same time. If you're going to do it, you may as well do it right.

Chynnalou is the fabricator. His Original post is here.
Forward facing subwoofers in roadster - CrossfireForum - The Chrysler Crossfire and SRT6 Resource

The quality of the surrounds is amazing. I know that it will dramatically improve the sound. I'm using Kicker KXA400.4 Amp and 43CWRT672 subs (same as shown in the Photo)

Based on his original post, the Subs will sit proud of the OEM sub grill cover. Image shown in the OP and attached here too.