I have been searching with no luck for a factory replacement exhaust from the cat back. I can buy as a set or individually. I am finding individual pieces I like but they are sold as part of a set and they don't want to seem to sell them individually. Must be $$$$.

Here's what I'd like:

Stock appearance
3" Mid pipe with 4 bolt flange for cat
Cross flow muffler 3" in 2.5" x 2 outlet
Stock 2.5 inch angle cut tips with smooth bends

 

To get mine for my 85 TPI, i just pulled an entire system off of an iroc in a junkyard.

 

I'm upgrading my '83 LU5's exhaust using manifolds(with A.I.R. tubes) and Y-pipe from a '88 L98 Formula.I don't like dealing with headers is why.I bought a Catco 3" convertor with flange mount on cat side.I intend on using Dynomax's catback system when I get that far(I prefer Dynomax over Flowmaster for sound - less obtrusive and better flow below 3500rpm).It comes with the I-pipe with flange mount,crossflow muffler and dual outlet with angle cut tips that I believe are polished and I know fit like stock.All of this is tubing is mandrel bent with hangers for stock location.I have the part number written down but can't locate it.Check with Hawks for stock pieces(or the classfieds on here).Look on Summit or JEGS for this system for HO(VIN code 7 or G)or TPI(VIN code For 8).Also you can buy the I-pipe,muffler and tailpipes separate from most manufactures(I know Dynomax and Flowmaster does).
Hope this info helps.