Thanks again, for your infos!
And thanks to fidspeed, for the offers on an xb4 or k1, but as i'm a early 1970 kid, those cars, like the sx remembers me back in the day, where my interests on rc starts, and these cars where far away to get

(££££), so you can call me a bit of an vintage/retro fanboy!
I was on an deal on a bosscat, but the price was to high and i didnt find any spars at all....
I have contact to an shop in austria, that still does have tons of spars for the sx, actually, the owner did closing his shop and i could buy a big box of spares for the sx, for less than half the price, they had cost

CS-Electoniks, the german distributor for schumacher still does have quit allot of parts, too.
I realy do like the k1 and i was near by to buy one for myselve, but as i do have a durango fleet and no shop here around me does realy stock schumacher parts, i was hold off.
Ps: i wrote the seller from the sx, i would be willing to pay ~€150.- for the package, but he didnt replay yet...