Greddy Pipe

Friend gonna sell me mint greddy 2.25 piping.worth it?
also where can i get rear section to muffler?

http://memimage.cardomain.net/member_images/3/web/483000-483999/483474_70_full.jpg

Do they sell just rear section. I want to go with Thermal. Rex i got has this exhaust but piping which comes out muffler is cut and welded ghetto style and dented up a little.would have to weld new piping on and flange also

http://shadowviper.sytes.net/importnightsv2/exhaust/b104-c104.jpg

anyone?