Who knows, yours may come in faster than mine. Mine MAY have been so slow due to the Christmas rush. From the reviews I've read about 'em, it's well worth the wait.
As for installing it myself, I'm more of an electronic guy. Give me a computer or virtually anything else electronic and I can fix it. When it comes to mechanical things, I prefer to watch someone else do it. See, the problem is that I'm extraordinarily forgetful. I'd forget my head if it wasn't attached. When it comes to remembering where I got this bolt or that screw, I might as well forget it. Coming up a screw or two richer after putting a couple of hard drives into a computer probably won't kill you. Coming up a couple of bolts richer after installing engine/transmission components can seriously endanger your life!
Good Luck getting yours in sooner, hopefully it WON'T be two months for you. Unfortunately, they are one of the very few distributors for the GMM Ripshifter...so it's them or fly to australia and pick one up.