When you go to do the timing chain install, I think you will find the instructions that most people have are really poor and lead to tons of questions. I have had to remove the timing chains on my truck and this is what I will tell you for putting it all back together:
You will put the key for the crank down in the 6 o'clock position and this will allow the camshafts to be placed in the 11 and 12 o'clock positions (small tab that sticks out the front of the gear). I want to say the passenger side is 11 and the driver's side is 12, but I might have that backwards. Either way, if you look at the timing chains, you are going to find 2 colored links on each chain (may be dark links on a light chain or light links on a dark chain). These colored links match up to the key on the crank and the tab on the camshaft. So, you need to make sure that you keep the timing chains separate so you know which chain goes where. From there, the timing will be where it needs to be. That is a much better explanation than most people get as it talks about putting the crank at the 12 o'clock position, installing the gears, turning it to 6 o'clock, installing a chain, rotating it back to 12, installing another gear, ......... Had me scratching my head for a long time.
Have fun. may I also recommend doing the plugs with the intake off (ie, half way through reassembly. It makes installing the plugs tons easier. It may also be advisable to get your hands on a Timesert kit and sleeve all the spark plug holes now. It adds about $100 to the project and an hour, but then you never have to worry about bowing another spark plug out of the engine ever. Must you do it, no, but after doing the work you have done, you can appreciate how taking the time and money now is a wise thing to do.
