DThelen,
It's a 5 inch muffler just like Summitts, that leaves 1/2 inch on either side for packing material which is low temp fiberglass that will slowly dissappear over 6 months or so. We have a complete system with 100% welded hangers that attaches to the truck just like the OEM system, no clamp on hangers that rust that support and align the syustem. Our muffler is packed with staniless steel wool and a ceramic blanket, lasts forever. We are slightly higher, less than 32. 00, but well worth it for the difference in the muffler alone not to mention the hanger design. Give us a call and we will be glad to help you with any questions etc.
Mark @ DPPI