[Jesse49chevy]

Made a little jig/tool to cut close to perfect circles with the plasma. Took a one inch hole saw I had laying around. Welded a 1 inch flat bar, drilled a pilot hole 2 inches from center. After deciding where the exhaust would run through I Drilled a pilot hole, stuck a drill bit to hold the jig in place and Baamm! 4 inch circle cutouts... I will roll up some 3/16 metal tomorrow and weld them in.