1) i think this company has them:
http://www.fatmanfab.com/
About 1.5" narrower?
You'll have to search around in there or call them because i don't have time to provide direct links.
2)
xc_hide_links_from_guests_guests_error_hide_media
He's lengthening rather than shortening, but the concept is the same.
3) i wondering if S-10/G body arms could be used as i'm pretty sure they are shorter than full size truck arms? The holes probably won't line up, but new holes could be drilled. Shouldn't be too hard? The outer tie rod ends may have to be shortened, but that's not super hard (i hope?).