Smacker Chassis

[OldMan]

Hello, I have an Ansmann Smacker (I think) and it has an aluminium chassis. When I look up Ansmann Smacker on the interweb thing it always comes back with the plastic type chassis and it makes it difficult for me to look up the right parts and any mods and stuff.
I presume that there were / are two types of Smacker.
I bought this a good while ago and it was used then so I do not really know what it is.
Could anyone please help with this?