Trying to pull the rear struts on my wife's Lexus, has over 100k miles so they've been in there a while. I can get everything loose except the two main mounting bolts....have a 3/4" nut on them which I believe is about 19mm. I've had them soaking in liquied wrench for the last couple days, and using a rattle gun set at the highest power I have been unable to break them loose. Due to their location, it's nearly impossible to get much of an open shot at using a breaker bar and a pipe....especially the top one. I'm stumped and sure don't want to pay to have it done...talk about expensive!!

Any suggestions? If I could get them loose, the entire job of replacing the struts and associated parts would be an afternoon project.