You do indeed have an Ansmann Smacker ... I was wrong, the Original Smacker did have the alloy chassis. The Master Smacker has the ABS.
The Smacker was replaced with the Master Smacker in 2009.
You can still get a few spares, I actually use the rear wing on my X-Pro
JE Spares still have many listing for parts as it does share with the Master Smacker. I also can CnC carbon fiber shock towers for the Smacker range if you are interested
I have both a Master Smacker and Royal Flash and love them
The Smackers PO code is
AR122000001
Hope all that helps
J