Klaus Kinski is one of my favourite actors - what a charismatic person he almost always was!  If you're interested in his personality more, you should check out his Biography "Ich bin so wild nach deinem Erdbeermund" (I don't know it is available in English, though) which is... ahem... quite strong tobacco. But very telling and fascinating - the man's ego was enormous. 

So, did you like "A Bullet for the General"? I know that Spaghetti Western Problem but: They were almost always shot without sound and then dubbed into the several languages - it was more comfortable and often, they were co-produced by some other countries and this way, there were some non-italian actors and so on. You'll have a hard time to find Westerns, Gialli or Poliziottesci that were really shot in Italian or English. I usually prefer the Italian Dub with subtitles.