That is such a cool mod, nice!
Are you going to create a "boot" in the space you've now created?
If so then remember to design it so that you can get to the bolts on top of the leaf spring in case you ever need to get the diff out, although fingers crossed you never will
The only reason i mention this, is because i was under my car the weekend and it's only now that it's all together i realise that a few of my design decisions won't make for the most accessible solution should things go wrong