What were some of these folks drinking when planning and fabricating these headers! Actually I like the lakester style header as it looks like an old school hot rod header.
I'm sure it could be MADE TO fit. And Dave Platt will know. Every time I've written he's not replied - but others seem to have more luck (esp from UK)
As has been pointed out the Early ones cant go onto roadsters because of the ABS.
But I'm sure a roadster system can be put onto a standard as Colin (aka Battersea when he posted) had Roadster pipes on his classic.
I can see if I can get hold of Colin and ask if he had to do any jiggling. He is quite an engineer.