haynes repair manuals are good but you can go to autozone.com and they have online repair manuels as well it a good site for a lot of information on repair work.
A haynes manual...
Five quarts including filter. My owners manual says 5.75, including filter. My experience agrees with the extra .75 quarts! :)
They always blow the head gaskets between 70 and 100 thousand miles.
38L is 10.04 US gallons.
Yes , on a 1998 Ford Windstar the fuel pump shut off switch ( inertia switch ) is in the drivers footwell behind the kick panel by the drivers left foot , by the inside hood release ( there is an access hole in the panel )
on the crank behind the front cover
Not very easily if at all, and why would you want to?
it's located on the firewall right in back of the intake
Yes you can, you will need to buy a y pipe either at autozone or your nearest parts store. You will also need to buy 2 mufflers flowmasters are my choice but you decide what you want. then buy some cool tips and there you go.
You can safely put 2ml into the 10l aquarium