I have Hedman split headers and Cherry Bombs on my 64 292. I just had new tailpipes put on it. I like the sound. As soon as I get the manifold gasket replaced (hopefully today) I plan to get a recording of the exhaust sound.
There are recordings of the exhaust with open headers and the glass packs at this location:
http://www.chevyasylum.com/64c10/64c10_11.html This is both sides of the spilt headers exiting on the driver's side of the truck. The new tailpipe arrangement has one side coming out each side, in front of the rear wheels. It sounds pretty good from outside the truck...I'm not sure if I like the sound from inside, tho. But I need to fix the manifold leak (exhaust port) before I can decide.
That's another problem with headers...sometimes it's hard to get them to seal properly.
