There are several freeze plugs and there are at least 2 different sizes on the 2.2L 4 cylinder. They are located on either side of the engine block a few inches below the cylinder head. Some of them are visible when looking from the front drivers side under/behind the front bumper and behind the exhaust manifold. It's dark so you will probably need a flashlight so see them.
1243
22L (liters) is 5.81 US gallons.
lr stands for long rifle(uses a bullet) I dont know where you got 22l from
I don't know if this will help but try this web page: http://autorepair.about.com/library/firing_orders/bl-fo-3162.htm Good luck. The firing order is 1, 4, 2, 3
GM doesn't have the fuel pump inertia switch. That's a Ford thing.
Impossible to answer without more information
50-200 usd
10-1000 USD depending on specifics.
No published sn data.
20-50 or so
100 or so
50-500 usd