sorry to bother and it has probably been posted before but say i buy an 06 V6 stang and wanted dual exhaust, could i put a GT system on it?

 

You could have a gt h-pipe welded in where the y pipe is on the v6, then have the driver's side over the axel pipe custom bent at a shop, and use the dual GT mufflers. Thats what I did, except with flowmaster mufflers.

 

if you trade out the headers for new ones you might be able to get away with using a gt-h and back. the problem is the headers have 1 collection pipe on the 6 on the gt they have one on each side.