True dual dumped people inside
Sounds like it's touching somewhere. It shouldnt "vibrate". It may need to be clearanced away from the floor.
Trending Topics
Gabe
The Best V8 Stories One Small Block at Time
True Duals It shouldn't be too bad. Mine hardly ever does it. If you get under the car and make sure that none of the pipes are hitting anything under the car all you have to worry about is loose stuff inside the car rattling. Things like change in the ashtray or the cup holder, or especially an empty aluminum can on top of loose change in the ashtray, can rattle pretty good. So long as you keep the loose stuff inside the car under control it's good. The sound is just too awsome to ever take them off
I plan to get dual electric cutouts to open header and maybe run the pipes out the back sometime in the future. 
Edit: I just say you have the spiro flows, do a search on the mufflers for true dauls. I think i remember reading that some flowmaster one chambers or sweet thunder chambered muffs would quiet things down for you, esp inside the car.l

Nice car
Nice car


