found it! It wasnt the red one it was a sunburst one on Kurtsequipment.com
"1977 sunburst Mustang with black pickguard, serial # S 714567 (59), rosewood neck, and rusty parts(41). It got a Duncan Hot Rails upon returning home from Rio (59). Earnie Bailey tells me he is "fairly certain" this was used for the encore at the Rio show (59)(seen 13). On the video which many of us own, he plays a Univox for the encore and though there is confusion as to what the "Rio" show really was, most consider it to be the Hollywood Rock Festival, January 23rd, 1993 (41). Aneurysm and Dive from 'Live! Tonight! Sold Out!' were taken from this show (seen 16). However, the 'LTSO' book lists this as being in Sao Paulo, while "Come As You Are" says otherwise (25)." Here is what Earnie tells me, "[This guitar] was brought to Rio by Ron Stone of Gold Mountain Entertainment. We received it the day we arrived in Rio. I am fairly certain Kurt grabbed it for the encore. I am not sure if the encore is on the bootleg video. The guitar had a baseball bat neck and I didn't have a hot rails pickup with me in Brazil to install. I really thought he was going to smash it because it didn't feel or sound right yet, but he didn't" (59
Via http://www.kurtsequipment.com
