1999 to 2004 Ford F250/F350 Superduty square or radiused front u-bolts.
These truck were manufactured with two different style front u-bolts. You will need to know if your front leaf spring u-bolts are square or are half way between round and square with a gentle radius around the OE cast u-bolt plate before ordering. If you make the wrong selection then the u-bolts with your kit (if included) will not work properly.