how are the true duals from TSP
You can't go wrong with their true duals- one of the best systems out there.
It's a common myth that true duals have to be loud. It just happens to be that way on F-body's because you can't fit a big muffler on TD's. Corvettes, Mustangs and GTO's all have TD's from the factory and they're practically silent. True duals with bullets can't be much louder than a Loudmouth because the mufflers hardly muffle the noise. It's still the same engine. The only difference is since TSP TD's have two 3" pipes instead of just one 3" pipe on the Loudmouth, you may get a little more sound. The TSP TD's just seem louder because they're dumped. Run the system out the back and it won't be much louder than a Loudmouth. In fact, spiral flows run out the back should be quite a bit quieter than the Loudmouth since spiral flows actually do a decent job at muffling sound for their size.
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It's all worth it though, they sound great and install was fairly easy. I did it in my driveway.
And yeah, all you need is this and long tube headers. Mine took some adjusting for one pipe to slip onto the other, but no leaks so far.



