Tried to put on trailing arms today, but could not get the rear bolt out of the knuckle. I sprayed yesterday and this morning. All the nuts came right off, but the bolt was stuck. I will need to make a visit to my buddies house for air tool assistance. My hand tools rarely fail me. IIRC the bolts have splines that grap as they go thru. I put trailing arms on my Monte 4 yrs ago, so my memory is foggy.