@ ArnoS,
I have downloaded both the parts catalog and the price list from them. For me it's ok but it's for my father and he is used with USA stores that have these big catalogs with all the parts in one place, also some MGs catalogs too. I guess he is just spoiled by these big really nice catalogs he has for other brands.
@ Tomppa,
I have been doing exactly that and found most of the things I needed from many different shops around the world. I guess this might be the best way to look for parts.
Thanks guys!