May as well just use the LTP moniker
And yeah, it did sound good! I ran a single straight on my 67 Dart 3 speed stick with simple mods like air cleaner, light weight fan, more timing, bigger 'jet' in the factory Holley AND 3.91 gears. Never took it to the track though but going by butt feel....maybe mid/high 15's? There wasn't many stock V8's around the mid 70's that was walking away from it. It didn't sound bad imo and that was my first straight pipe on any car and it went down hill from there
The only time I've ever been stopped for excessive noise was 'due to spinning tires' and why I didn't get wrote up on the pipe.....is anyone's guess because I was really on it as hard as it could go. Mat the gas and dump the clutch and spin city with that thing. Had to warm up the street tires so they would hook and no, didn't tell the cop that.