On the Pathfinder I removed the Gibson muffler and overly large y-pipe and rebuilt it with 2" from the cats to a 2-1 Spintech muffler, while keeping the 2.5" Gibson tail pipe which goes over the rear subframe. The sound has much more growl to it which is wonderful, but unfortunately still a bit too bassy, so I'll be swapping in the stock tail pipe section and hopefully find a happy medium and get a little power to boot.
Also this weekend I was planning to be putting the head back on my Jetta Diesel, but the parts supplier for my new head gasket and bolts screwed up and didn't ship them overnight as requested. *@&*#&@ Why are so many car parts suppliers chumps in the order fufillment/customer service departments eh??

What projects are you all working on?