[Rattle Snake]

Hi I'm in the process of putting a gd together, and have always wanted sidepipes, I know I could have gone elsewhere and this wouldn't have caused nearly as big a headache, but I wanted a GD for whatever reason, now I've seen the one the guy had on the GD stand at Stoneleigh last year and was most impressed which has renewed the idea, but I want a set of pipes as per the sort seen on originals/kirkhams albeit in polished rather than white. It's the shape I'm on about, also when looking at custome chrome or shiny bitz, they all seem to go 4 into 1 into 4 again... I want 4 to stay 4 until after the bend where the pipes exit the side of the sill. Any help, websites, names etc would be gratefully received.
Many thanks.