We just finished up a couple sets. We have been running a prototype version of these for the past year and a half and are confident in their potential. We are working on making a batch of another 10 of these now, they will be able to be ordered with or without cutouts, with or without high flow cats (in the rear cat position) and can add as many o2 bungs and egt bungs are you guys can handle. EVERYTHING in the picture is 100% 304 stainless steel, TIG'd together with 309ss rod and will outlast the car, for that matter it will outlast us! most of the weld seams will be eliminated as we have them now drawn up in a CNC program thru the mandrel bender. let me know what you guys think?