header delima...

well i am working on getting everything right on my new project...i got the car jacked up today and got under it and discovered a whole lot of crazyness...i cannot find a brand anywhere on the headers and there is clearly a hole in one of them...so trying to decide if i should just replace them or what...i have no idea if a new set leads me down the same path and no clearance...so i am assuming some of you have ran into this issue...what do you all suggest.