My point about weight was to point out (not very effectively, I admit) that lowering links change the effective springrates and dampening rates making them behave as though the shock was even lighter. As the stock pre-2014.5 shock is set up for a 160lb rider, the decrease in effective rates is undesireable for all but the lightest KLR pilots.....and the 2" longer links have twice the effect of the 1" ones.
The best solution if you really need to lower the bike that much is to have a custom shock sprung and valved for your weight usage AND to take into account the lowering link length. Cogent Dynamics does this all the time. Not the cheapest route to go though so as always it depends on budget.
Anyhow, this doesn't answer the question you asked so I'll be quiet now. Lots of guys (and gals) going back and forth on lowering links so it's quite possible you'll be able to find someone to swap with. Good luck. :-)