Hello Jorge, nice 370’s are cool and it should sound, similar the engine’s are similar in size 3.5 vs 3.7 it’s going to sound more loud due to the engine size.
I have just a muffler delete on my 06 Z and theres a fair amount of drone, but once you pass 60 mph, it sounds normal. So around maybe 2k rpm theres drone here and there, not unbearable though.
Well the Tomei does make the exhaust sound smoother because it has a muffler and resonator but the muffler/resonator delete is a lot cheaper and sounds good and makes a good amount of noise but it also depends if you prefer single exit or dual exit.
La4TheWin9 when I had that exhaust set up I did not get pulled over and now it has megan racing headers, with resonated test pipes, still y-pipe and invidia N1 exhaust and I’ve gotten told that it’s too loud but no tickets.