Ditto what Pete said (thanks Pete, you save us alot of typing :wink: )
I did mine over the course of time, and did alot of other stuff to it while I had it off the road. I spent about a year gathering parts...when I saw something I needed for a good $$$ I bought it and stashed it. My total cost was about $300, courtesy of the junkyard and offsetting the price of what I bought by selling what I took off during the swap.
It's the absolute BEST way to get to know your MJ, and you have the satisfaction that you built it instead of bought it.
Jeff