About to bite the bullet and replace my beat up y-pipe that's been giving me some emissions related issues for some time now. I wanted to check in with the CL fam to see whos had success and where did you get quality parts outside of the dealer. I ran across these pipes(link below) on eBay and wanted to know what you guys thought about them. Also if anyone knows of better, similarly priced parts available?

http://www.ebay.com/itm/2001-2002-2003-2004-2005-2006-Lexus-LS430-4-3L-Front-Y-Pipe-with-Catalytic-OBDII-/281370791321?pt=Motors_Car_Truck_Parts_Accessories&hash=item4183018d99&vxp=mtr

http://www.ebay.com/itm/01-06-LS430-Rear-Y-Pipe-With-Main-Catalytic-Converter-Davico-18390-W-Gasket-/190987141281?pt=Motors_Car_Truck_Parts_Accessories&fits=Year%3A2005%7CModel%3ALS430&hash=item2c77b880a1&vxp=mtr