Has anyone replaced a 2.2 8 valve head gasket with the motor still in the car? What problems am I getting into? I have a miss and burning coolant at operating temp. ,but still have 125 lbs. compression cold. Assume it is blown head gasket

http://www.knizefamily.net/minimopar/headgasket.html
Notes It's easier to have someone help you pull the hood. Then you can use an engine hoist to lift the head.

The bolts for the swingvalve to the downpipe are easier to saw off than try to save. It's a good time to replace the O2 sensor since it is a bear in the car. Use MOPAR sensor ONLY. You are REPLACING the sensor so cut the wires and use a box end wrench for the best leverage. Hook another box end/open end to that one for gorilla power. I have a box end with the open end cut off and slip a 4' conduit on for easy removal. Sockets make it easy to get into trouble breaking the sensor before you get it out.
It's a good time to get the valves and seals down when you get the head checked at a good machine shop.
Be sure to change the oil afterwards.
Note the thermostat mod Rus has on his site.

can be done as Bill says, you dont need to replace alll kinds of odds and ends, making sure the head is flat and clean and the block surface is clean and flat is a must and new headbolts are used