This was perfect for my 99 Dodge Ram 1500 5.9. Note that you need to weld on the O2 connector for the O2 sensor. Yes it is stainless steel and great for my farm truck but if you have a high end show truck you may not be happy with the finish. The finish is not as nice as pictured and there is discoloration around the welds. The sound is much better than the original part that I replaced.