Joined: Jan 2008
Posts: 23,642
Likes: 1,106
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
+1 Yes. The "brains" are in the indexing lever, not the derailleur. A derailleur is just a device that moves the chain right or left to match the cable input from the lever. Dura Ace has its own quirks, but you are talking 105 so no problem.