I made a Hi-flow air out my stock one by using a peace of steel an peace of 2inch flex house and a 1/4 to 2 inch exhust pipe. The tools that you need are a saw that caught metal and a welder. The first thing you do is take apart your stock air box the you atke the metal bracket that on your air box and trace that out on a peace of steel. After you done that you will mark were you want to cut out the inner whole. Then take 1/4 to 2 pipe and cut that on a sharpe slant then you weld after that you will take the stock air box pipein the cut out the part that mount to the box then all is make a mount for the air cleaner or use your stock I had to make mine cause my air box didnt come with one and the way to that mount is trace the top of your air cleaner then cut it out and then drill a hole through it use a long bolt jb weld the bottom and use a wing nut for the top it bet spendin 120 on a project blaster air boxI:I