hello muminiasty,
I am doing some digging on the subject as well. here is what i found so far. i think a 3/8'' drive torque (5-80 ft-lbs) should do. you won't need any insane force to do that.
30mm socket for removing tube nuts (17 ft-lbs when re-torquing if am not wrong), some small 10mm bolts here and there. I assume you are on V6, so there will be some messing around involved with getting room to work at back of engine.
As per seals, i think you should replace all on the way that you touch(valve cover gasket, upper tube seals and some high heat thread sealant if planning on removing the tubes).
Replacing Valve Cover Gasket
Replacing Valve Cover Gasket
i have sludge buildup with pictures - what to do? (56k iffy?)
i have sludge buildup with pictures - what to do? (56k iffy?)
How-To Guide: Removing and Painting a Valve Cover - 5SFE -- 56K warned
Lots of Pics
How-To Guide: Removing and Painting a Valve Cover - 5SFE -- 56K warned Lots of Pics
sry, i was not bookmarking any V6 links...