[Bigtone]

Betta & Classic make both cars in 1/32 in lexan but you can order them in 30 thou Plasticard and you could buy lexan ones as donors for window. Only£3.20 each

 

[Bigtone]

I don't think mant of the Betta bodies are to scale width apart from the pre 1970's ones. If you buy them in Plasticard it wouldn't be to different to make to make them narrowerthem narrower