Chiltons manual
It just depends on what you're going to do.. if you're going to keep the engine as is, you might just want to do it now so that it doesn't break in a month or 3 months or whatever.. if you plan on swapping the engine, just change the head..
Swapping the head is pretty straight forward, there are just a couple hair pin turns, some 90' turns, really skinny spots where the car will barely fit on the road, ice, glass, water, mud, snow..
