This thread hasn't been active for a while now, but I thought I'd add this link to a Sport Rider article (first published in 2001) about a totally modded GS500 racebike.
A bit off-track from Ecomodding, but interesting for anyone that like the GS.
Class dominating Suzuki GS500 - Sportbike Review - Sport Rider
You really need to look closely at the photos to appreciate what all was done. An amazing amount of custom fabrication, top-quality components, and carbon fiber went into building it.
Jay