Alright guys, i think this might have been touched upon before, but is the spintech xpipe the exact same as the dr. gas xpipe? Also, doesnt the spintech xpipe come welded together? And as for a catback, i will be purchasing one of these xpipes here in the near future and seeling my bassani, i was curious which catback would sound better with either of these xpipes, spintech or borla. Right now I'm leaning more towards spintech because it is the same company that makes the xpipe so they should sound perfect together. Please answer my question and give me some input on this setup. Thanks a lot.