How to shorten the mounting brackets on bench seat?

[66 lwb cs]

I did the search thing and alot of people have mentioned it but found no write ups or pics of what and how it was done so here goes. Has anyone one shortend the legs on the stock bech seat and if so how'd you do it how did it turn out and any pics would be appreciated. If you have a link to this somewhere where it has already been covered then that would be appreciated too. Thanks in advance.