How hard is it to change freeze plugs.

[guilty]

My girl got a 2000 explorer with bad freeze plugs.(Trust me) Is there a trick to changing these. It looks like I might be able to get to a few of them but not all of them. Thanks in advance.

 

[8111870]

if that is indeed what needs to be done, removing the engine is the best way to do them.
if that is not an option, i have used block heaters to replace freeze plugs in tight spots.
good luck