Since I just completed the 4/5 drop and all, I want to look into some new mods and things to fix on the truck. I lost my Haynes manual and need to know where the brake booster vacuum line is for the seafoam treatment. Also I am changing spark plugs and wires along with the oil in the next few weeks.

I am just over 38000 miles. Is there somethings i should check into in addition to the above? IE transmission fluid and filter, rear differential fluid, antifreeze/coolant change???

Help a bored guy out here.... got nothing to do until I leave late January...