I'm pretty sure any of redcats 1/8 bodies will fit. May need to make new mount holes but the lenth and width are on point. The back near the fin may need to be trimmed. Look at some on line most sites list the measurements
I also have a shredder and am going to but another body n hit it with a...
I have a small hand held quart size sand blasting gun and compressor I use for etching glass that works great if you use a course blast medium
It also roughs up the surface prepping it for paint. Just wash it after blasting n let dry.