There is alot of trial and error building your own setup. I used a sawzall, Hobart 140 welder, and a BFH to build this in my driveway. I made alot of mistakes (like 90 deg mounting my wastegate) but it's all part of the fun. I plan on redoing my w/g this winter but all of my hotside is 2.5 so it should handle any power level I can afford. I am by no means a fabricator I built my whole setup with a 360 or 408 in mind for the future so it does have some lag but traction isn't and issue either....