are truck 12 bolt rear ends the same as car 12 bolts? My blazer has a 12 bolt rear, and I have a chevelle with a 10 bolt. I'm wondering if, when I put a 14bolt in the blazer, can I use the 12 in the chevelle? I know I would have to have the spring and shock mounts changed, and have it narrowed...but do the axleshafts interchange, since I would need 5 lugs? thanks for any help you can give me.