Alright, I looked around, and then searched here, couldn't find an answer.

Looking at Mariah Motorsports website, the picture of their [whole] exhaust system for a GSL-SE looks exactly like the picture on Racing Beat's website. Are they the same or is there a difference? And, if there is a difference, anyone had experience with Mariah? I know everyone talks about Racing Beat, haven't heard about Mariah yet.

 

Racing Beat FTW.

 

I believe its all the same muffler,even RB doesnt make their units.They are made in Italy by some company or another,then sold to various companies.
Although I have no proof positive,the same muffler seems to be offered by Racing Beat,Mariah and Rotary Performance in Texas.
All are touted to be very tough and quiet and if they are infact the same as the RB,then that would be true.Ive got 50K miles and over 6 years of TII abuse running through my RB SP muffler and it works/looks as good as the day I got it.They can be pricey,but you get what you pay for....also,many say that they are restrictive,but my experience says otherwise........and, quiet doesnt always equal restricive.....and loud doesnt always equal horsepower.

 

+1^

 

Well maybe if you used your eyes.

Look above all the exhaust systems....it has the Brand logo. Most are RB. Some for the 2nd an 3rd gen are HKS and M2

http://www.mariahmotorsports.com/