I've been reading the various shock threads I can find, and it's looking like the R6 rear shock might be the best way to go, based on what I've seen. Does that sound right? They're certainly inexpensive on eBay, and building a bracket to make it 1" longer is simple enough. One thing I had noticed though is that the older R6 shock (2001-ish) has the reservoir mounted perpendicularly to the shock body, which might fit better and not hit anything when the shock is fully compressed. I was wondering if anybody had explored that possibility.