I just want to share my opinion about these mufflers,Mufflers look,sound excellent sound exactly like the 40 series.I paid 63 bucks for a pair and im very pleased right now they are dumped,BTW they are on my 2000 gmc sierra classic with the 5.7L vortec.They sound alittle bit better then the thrush welded's i had on my LT1.If you have any questions about these ill be more then happy to answer them.As far as the welds they look pretty damn good coating looks good also.