If you are looking for ideas, here is what I did last summer on my L3130. The tool box drops right in and stays put very well. I have very hilly and bumpy land, and it doesn't budge. But you can lift it out any time you want.
http://www.tractorbynet.com/forums/projects/185744-overkill-industries-toolbox-chainsaw-holder.html
I like it, I think I'll give the chainsaw holder a go. Thanks for the idea.