Durst 184 - CLS 300 lamp replacement

I have a 10"x10" Durst L184 with a CLS300 color head and would like to buy a couple of replacement lamps. It should be a 1000W R7S lamp but don't know if it is a standard halogen bulb or a "special" one.
Is anybody aware of a reliable source for this kind of lamps?
Thanks!

I think those are going to be hard to find. I don't even know what kind of base they have. Maybe it is possible to convert it over to a CLS301 which takes two of the 300W ELH bulbs that can be purchased for about $15 USD each.

Durst Pro USA indicates they may have an adapter kit to convert over to the ELH bulbs. Scroll down on this page to the CLS300 section: http://www.durst-pro-usa.com/pdf/ENLARGER SELECTION TOTAL DOCUMENT 5 15 02.pdf

Yes indeed they appear to be hard to find. I was just hoping to get away w/ standard home bulbs but I understand the genuine bulbs have a special color temperature and stability over time.
I have to check with the durst pro usa guys what this kit would set me back..
Thanks for the info , I know you are a very knowledgeable people about the 184 enlarger, I am also looking for some kind of masking system for the NEGA205 negative carrier, something I believe like the MAVET system, which by the way is another very hard to find item ..
Durst 8x10 enlarger parts are in general very rare items.. I live not too far from Bressanone, Italy where they use to build these beasts, and go there sometimes for the weekends, I might check if they still have something left.