Like you I had a GWR exhaust on my previous miata and as you know the GWR quality is top notch and the main reason why I bought the GWR full Abarth exhaust ( with resonator) for my 124. I absolutely love the new sound of the exhaust along with the occasional burbles and pops. I recently completed a long roadtrip with it ( ~4500 miles) and installed the packed baffles before we left (minor modification to get packed baffles to fit). Now that I am back home I have removed the baffles and am enjoying the full volume again. Once you have the system installed, you will understand the grins on Brian's face in the videos he has posted demonstrating the exhaust system. You can't help yourself.
I have several other mods on my car, including springs, wheels, big brake kit, but without a doubt the exhaust is the one mod that adds the most fun factor everytime I drive it!
Brian, Thanks for the updated info on your experience with the lightweight battery setup. I am still on the fence about it but appreciate your full disclosure on your findings with the setup and info about the fiat parasitic battery draw.
Victoria, BC Canada
Sold: 2006 Winning Blue, 2.5L, Progress springs, KYB shocks, Michelin PSS, Full GWR street exhaust.
Current: 2017 Fiat 124 Abarth, Rosso red, M/T, Progress springs, Wilwood BBK, Full GWR exhaust