Potential grounding cable to replace key wiring cables

 

I salvaged from my KIA Spectra, the custom grounding cables I did after it was taken over by someone else. I have a large number of  size L cables and a single meter long size M cable. I plan to replace the stock starter cable with a size L version. However, the wiring gap in the engine block will determine later if I can replace  the stock cable from starter to battery with an L or M version, all to be done under a re-wiring exercise I plan do do in future.