frozen bolts
Had the same problem on my 60 I sprayed liquid wrench on them every day for about a week and then I got under the car and took a center punch some what smaller than the bolt and tapped it pretty hard but not so hard that it did any damage and they came right out. I would be careful...
had afellow tell me yesterday that some years back he and a buddy pulled the front spindles and rear axles out of a late model buick and they swapped right on his 60 lesabre. he couldn't remember the year possibly a 68 or 69.is anyone familar with this swap.