Stamped steel or cast baskets?
Anyway not sure if this will help you, but here are some measurements someone has taken of a 98 vintage woofer:
http://www.diyaudio.com/forums/showthread/t-85320.html
That might help you match up a
pair of replacements.
Other than that, since the Titan is a smaller speaker it is probably one of those you would more likely see being sold as a "single" or drivers-only sale (think of falls off of speaker stands!). You might get lucky watching "that site'. For example there is a single Phantom currently posted for sale, but I think that uses an 8-inch woofer.
Might help your fellow AKr's come up with a solution if you let us know where you are located as well. How much did the CL Titan's cost, if you don't mind me asking - and what are you willing to spend to get them working?
p.s. w.r.t. my Titans, I got my vinyl veneer - now to acquire some time for the project!