3 of the 4 bolts will come out with ease (as long as they are not overly rusty). The 4th one is the one that will cause the trouble. The bolt with the issue is front drivers side one. You can get the nut off no prob, but when you try and get the bolt out it will touch the trans case with no hope of coming out.
At this point, you have 2 options:
1) Lower the subframe, remove the the old bolt, replace control arm and put a new bolt in pointing downwards as it was originally. Raise subframe etc and you are done.
2) Grab a Sawzall or equivalent and unleash your anger on the bolt, replace control arm, and put a new bolt in pointing upwards.
I opted for #2 without question.
