It really is a good book. We were hoping to keep the book and still get the swaybar. It in no way was UPS's fault. Whoever shipped the book at ISR put on the invoice that it is the BSR12XZ 20mm rear swaybar- which is correct. Someone their switched the addres labels or something. We deserve that book for free! Now if only I could reach them by phone. Most of the time no one answers there! They might have taken my $161 and skipped town?