The Class NUMBER@1 Turbostar is a type of diesel multiple unit -LRB- DMU -RRB- built by ORGANIZATION@1 -LRB- previously ORGANIZATION@2 -RRB- at their ORGANIZATION@3 in LOCATION@1 , LOCATION@2 which is identical to the Class NUMBER@2 , except for the replacement of the BSI -LRB- ORGANIZATION@4 -RRB- coupler with a Dellner coupler .

The Class NUMBER@1 is identical to the Class NUMBER@2 , except for the replacement of the BSI coupler with a MISC@1 coupler .
