I pulled apart the E-Series pipe that came on my 426 to repack it to find that there was no packing inside. This is the exhaust with the stackable plates and the solid sprark arrestor cap on the end. It didn't have any traces of old packing in there and there is quite a bit of space in there. I was just wondering if packing belongs in this pipe? Maybe the pillow type? I didn't think that any pipe was packless. Apperently White Bros is done and owned by V&H now. So there isn't much info or support out there. Just wondering if anyone has had this pipe in the past and has packed it?