One of the benefits i see to having an actual "short shifter" setup, is that since the part above the fulcrum is so short, and the part below is so long, this makes for a LOT less potential strain for the shift cables, rails, forks and sliders. A 1g dsm short shifter accomplishes this pretty well.
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That's the route i took, but without the machining of new parts. Rather than make a new pin for the lower portion, i extracted the one from the factory GVR4 arm, and welded it in place on the 3kgt arm, after removing the one that was originally there. I don't really remember what i did in place of the custom bushings Whoodoo used, but it ended up being fine. I figured out some way to have the factory bushings work. It's not some sloppy mess, either.
This is a VERY much shorter throw than factory, and even quite a bit shorter than a 1g dsm short shifter.