Extenders
 

Where can I find chassis extenders ??

i chop up credit cards and use super glue... and chop some smaller pieces and put them on the bottom vertically as supports, which also hold th body on tight

Thanks , I'll try it with styrene stock

i cut a parts tree from a model. it had some square flat parts that required minimal shaving. just cut it to shape and super glue it on.

the part in the picture comes with zcars hop-up motor/gear kits and i believe they can be bought on this website.