Ok, I have been through an exhaustive search for exhaust parts. Only parts out there seem to be old stock from AP Exhaust even though AP still shows the Independent Rear Suspension version on their website. Was able to piece together 4 of the 6 required large parts on ebay. Here is what I have so far on a cat back system.
28291 Front Pipe – Not Available
3353 Front Muffler – Got one and two are still available
28292 Front Over Axle Pipe – Got one but No More Available
18048 2nd Over Axle Pipe to Rear Muffler – Not Available
2053 Rear Muffler – Not Available
700309 Cheaper Universal Fit Rear Muffler Substitute – Got One, available from multiple vendors.
24808 Tail Pipe – Got One
Have sent out multiple emails and made calls to AP Exhaust dealers to try and special order missing parts. Got a bunch of no can do replies. Vendor on ebay, Midwest Auto Parts has the couple remaining items listed above.
Dan Benedek – Only parts I could find at Rock Auto are for Non Independent Rear Suspensions