Goldshark,
I havent really had it out on a "long duration" , I think your meaning like 500 miles on the freeway at 75mph?
I have had it out on the twisties for 200mi. 25-65 using the gears. Its awsome. My hair is standing up again driving like it used to.
Plus I feel it was one of the culminating touches of my planned ,strategic upgrade package ..ex. By routing the pipes to the side, I can upgrade the unispring to composite without reservations about heating it and possibly degrading its stability..ect..
Also 69's were optioned with sidepipes, not that that is a big factor but somehow it did eliminate any thoughts that I was doing a "chop". I wont do any "chop" on my car, thats for sure!
Hooker options a reverse flow insert that is the most mild in sound. I got their glaspack option which is more rumble in all ranges but still not radical.
JCL, a fellow member, makes baffles for this system also, they are the biggest firebreathers, more for the racing apps.
Thanks for asking..
TC