need a Firewire CD-R/DVD-R mechanism…

[John H. Lincoln]

My Sony Spressa CD-R drive has just failed (tray motor/ejector), and I 
need to buy a new mechanism.

Because the FireWire case & power supply are still good, I want to buy 
just the mechanism, and install it in the Sony enclosure.

Does anyone have any recommendations for a CD/CD-R/CD-RW mechanism?

Or, how about a DVD/DVD-R and (why not?) DVD-RW?

TIA.
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John H. Lincoln
Digital Media Designer
Fornalutx, Mallorca, Spain