I read the thread about the "more coasters" and although it touched on my topic, I didnt get a real good answer (please excuse me I'm a little slow) but what is the "accepted" procedure for listing coasters that have moved.  For example, I rode the "Jet Stream" coaster at SFStL which has since been moved to texas and renamed Viper.  
 
also i have a coaster addition for you (I didnt know where else to post it).  It is a defunct (destroyed) coaster 
 
Name: Rolling Thunder 
Location: SF Great America (where Viper is now) 
Installed: ???? 
Removed: between 1991-92 seasons 
Type: Intamin bobsled (ala Avalance run/DT) 
 
sorry but that's about all the info I can come up with now.  Perhaps Chi-town or one of the other chi peeps can assist. 
Thanks and take care. 
lata,jcsn