Hey Guys, I was just wondering if any one has changed a 2wd into a 4wd and if so how hard is it to do and what all would I need to do the job and how much should I expect to spend, I have a 97 3500 2wd. I would just trade for a 4wd but I cant find exactly what I want for the price I want to pay, and I already have way too much time and money invested in this one. Thanks in advance for any help, hints, etc.