Are there any other alternatives to the Losi Diff mod...to make the e-revo diff stronger and more durable?

I'm asking cos I really don't want to shell out $100 for the two diffs (if you can find them) and then dremel in hopes of getting it to sit correctly in the bulkhead...and a newbie like me...would just screw it all to bits...

can someone tell me how this locked diff works (how does it install and go together and what is needed)?