berg or ktm

Does anyone have a cross reference of parts and part numbers between Berg and KTM. I have a 2006 FE450. I am having a hard time getting the parts I need. I know there are a lot of overlapping parts I just don't know what matches exactly. There are some subtle diffferences. I' d hate to have...

I was wrong, sprockets weren't 16/40, manual is wrong. I pulled the rear & it's a 45, front is a 15, I should've looked before ordering. Anyway, I'll correct the numbers. Sorry for the misinformation! After riding the bike the first time I noticed how tall it was geared. Did some...