technically adding more mass increasing mms and lowering fs and efficiency slightly if you are just adding another cap on over the stock. Dont think it'll impact your scores by too much though. I'd say its just aesthetics.
Upcoming setup ... two taramps 15ks subs...4 Team Ascendant audio 18s
320 amp singer alt, 6 group 31 agms in the back (clearly not enough)
80 prs, two way active, massive tweets, pwx 10s in the doors, UN 6.5s in the kick on ct 500.2 and alphard 200.4