Brompton owners

I was looking at Kinetics 8sped conversion and was wondering if he simply uses an 8spd standard hub? Would all I need to do is build a Brompton rim onto a SA 8spd hub and away we go. Or will I have to start altering the rear triangle?

Thanks for pointing out Kinetics SA 8-speed hub conversion. I wasn't aware of this option. Reading through the detailed replies by Kinetics to queries on their website suggest these issues:

• Original Brompton rear triangle is retained, unmodified for steel, but that a small amount grinding off the chainstay may be required with a titanium rear triangle.
  
• SA hub only allows a minimum rear sprocket of 20t which leads to a requirement for very small chain rings (30 to 33t).
  
• Modified chain tensioner is required to clear the 20t sprocket, which Kinetics supplies in its kit.
  
• Weight increase over standard Brompton models is 1kg vs 2-speed and 750g vs 6-speed.
  
• Metal thumb-shifter is available as an alternative to the twist-grip shifter.
  
  

As the conversion to a SA 8-speed hub looks much simpler than the more expensive requirement for an entirely new (wider) rear triangle, why would someone go to the trouble of fitting a Shimano Alfine 8-speed hub, rather than the SA alternative?