After getitng this jeepster and fixing a number of things. I was checking the oil and noticed that the exhaust manifold is cracked on the drivers side (225 v6) It looks like the crack goes most of the way around. can this be welded? Where would one look for a replacement?. If I tried to weld it should I weld the part I can get to befor taking it of so it soes not move and I won't change the fit?