We don't have a list but it is easy enough to check for matching KTM parts. First go to
http://www.bikebandit.com/, click the search function at the top left of the page, select "OEM Part search", at the manufacturer drop down select KTM, then enter the Husaberg part number from the parts manual you wish to search for and all the KTM's that use that same part will be listed.
For instance, you have a 2004 550 I believe, so lets use an exhaust valve Husaberg part number 59036031000, omit any dots or dashes use numbers only. The valve matches 67 KTM machines:
2000 KTM 400 EXC RACING AUS View schematics
2000 KTM 400 EXC RACING DIV View schematics
2000 KTM 400 EXC RACING USA View schematics
2000 KTM 400 SX RACING DIV View schematics
2000 KTM 400 SX RACING USA View schematics
2000 KTM 520 EXC RACING AUS View schematics
2000 KTM 520 EXC RACING DIV View schematics
2000 KTM 520 EXC RACING USA View schematics
2000 KTM 520 SX RACING DIV View schematics
2000 KTM 520 SX RACING USA View schematics
2002 KTM 400 EXC RACING AUS View schematics
2002 KTM 400 EXC RACING EU View schematics
2002 KTM 400 EXC RACING SIX-DAYS EU View schematics
2002 KTM 400 EXC RACING USA View schematics
2002 KTM 400 EXC-G RACING USA View schematics
2002 KTM 400 MXC RACING USA View schematics
2002 KTM 400 SX RACING View schematics
2002 KTM 520 EXC RACING AUS View schematics
2002 KTM 520 EXC RACING EU View schematics
2002 KTM 520 EXC RACING SIX.DAYS EU View schematics
2002 KTM 520 EXC RACING USA View schematics
2002 KTM 520 EXC-G RACING USA View schematics
2002 KTM 520 MXC RACING USA View schematics
2002 KTM 520 SX RACING View schematics
2002 KTM 540 SXS RACING View schematics
2003 KTM 400 EXC RACING SIX-DAYS EU View schematics
2003 KTM 450 EXC RACING AUS View schematics
2003 KTM 450 EXC RACING EU View schematics
2003 KTM 450 EXC RACING GB View schematics
2003 KTM 450 EXC-G RACING USA View schematics
2003 KTM 450 MXC-G RACING USA View schematics
2003 KTM 525 EXC RACING AUS View schematics
2003 KTM 525 EXC RACING EU View schematics
2003 KTM 525 EXC RACING GB View schematics
2003 KTM 525 EXC RACING SIX-DAYS EU View schematics
2003 KTM 525 EXC-G RACING USA View schematics
2003 KTM 525 MXC DESERT RACING EU View schematics
2003 KTM 525 MXC-G RACING USA View schematics
2003 KTM 525 SX RACING View schematics
2003 KTM 540 SXS RACING View schematics
2004 KTM 525 SX RACING View schematics
2004 KTM 525 SX SUPERMOTO View schematics
2004 KTM 540 SXS RACING View schematics
2006 KTM 400 EXC View schematics
2006 KTM 450 EXC View schematics
2006 KTM 450 EXC SIX-DAYS View schematics
2006 KTM 450 MXC View schematics
2006 KTM 450 XC-G View schematics
2006 KTM 525 EXC View schematics
2006 KTM 525 EXC SIX-DAYS View schematics
2006 KTM 525 MXC View schematics
2006 KTM 525 SX View schematics
2006 KTM 560 SMR View schematics
2007 KTM 400 EXC View schematics
2007 KTM 400 EXC FACTORY RACING EU View schematics
2007 KTM 450 EXC View schematics
2007 KTM 450 EXC FACTORY RACING AUS View schematics
2007 KTM 450 EXC FACTORY RACING EU View schematics
2007 KTM 450 EXC RACING USA View schematics
2007 KTM 450 XC USA View schematics
2007 KTM 525 EXC View schematics
2007 KTM 525 EXC FACTORY RACING AUS View schematics
2007 KTM 525 EXC FACTORY RACING EU View schematics
2007 KTM 525 EXC RACING USA View schematics
2007 KTM 525 XC USA View schematics
2008 KTM 450 XC ATV View schematics
2008 KTM 525 XC ATV View schematics
This works with even some first generation Bergs even though the site begins at 2004 for Husaberg parts.
The Bike Bandit part numbers are proprietary so using their part number from their schematics will yield only one match. You must use the Husaberg part number from the parts manual.