How to Stuff Large Castle Motors into an E Revo?

Even though I do have a 1717 in my second Revo (pretty much a shelf piece) I can't see too many people going out and doing the same. Just way too much of an overkill so making a mount for mass sale doesn't make much financial sense to me. Anyway the 1518 is about as a perfect of a match for the Revo as you could get and it will fit with only minimal messing about.