side pipe delimma

[restoace]

Hi, I am new to this site and I'm hoping that someone could give me some information about a header side pipe configuration. I work at Coventry Restorations (PA) and we are currently working on a cobra kit car that incurred damage to the drivers side. In the accident both the side pipe and the header were destroyed. The only relevant information I have on the configuration is; the pipes were made by SMC Co (which I understand is out of business), the engine is a 289, the header-to-head flange has ports with the dimensions 1in x 1 5/16, the header does a hard 90 down and shortly there after makes a 45 or so out to the side pipe cutout, the side pipe and header are connected with a square flange in which all of the pipes have a diameter of 1 1/2 inches. We have looked in numerous catalogues and cannot locate an exact match (biggest problem being the square flange). We are looking to purchase both driver side and passenger side configurations. Any enlightenment that you can provide would be greatly appreciated. Thanks, Adam