Ken, I'm sorry the previous factory system was damaged in the removal proceedure. I had a local buddy inquire about the factory tip also. The gentelman who I allowed to remove the OE system was in such a hurry he slammed the tip to the ground just as I was yellig, "Hold on I wanna save... . Ka-Blam..... that. " I told him no worry... he felt bad about it. But his care doing the 4" install, made up for the bafoonery of disassembly.
I belive most muffler shops will remove your factory muffler and install a short piece of 3" in place for $50 bux or less. I'm in northern Kalifonia and my buddy just did this last Friday for that amount.
William