The DSM (Deutsches Schifffahrtsmuseum = German Maritime Museum) issued a kit for the post-world war II Schnellboot "Kranich" (= crane). Scale is 1/100. http://www.dsm.de/pkranch.jpg
It is still available from several internet vendors.
The CFM kit is an older hand drawn model and very nice for 1/250 but I doubt if it will scale up to 1/100 and still look good. I have seen the GPM 59 kit on EBay most likely that will be your best bet on finding one.
I ran across a site that shows plans for the S-100 Schnellboot, detailing several parts of the boat. Thought it'd interest you...
The address is: rpalmacci.free.fr (without the three "w"). Seems to be french...
You can order from ECardmodels.com. Wished someone would do the earlier version E-boot. I have this from ECardmodels, (S-Boat) and have thought about scaling up to 1/72 scale.
Afraid not I was looking for the old Airfix kit when I found out about this beauty I don't even know if it is still available. You could try contacting Chris at http://www.marcle.co.uk/ he is very helpful and might have a contact he can use to get you one otherwise its googling till you get one.Good luck and don't forget a build thread.
Phil