If you do a search on the forum, it will lead to discussions on the springs from way way back. I had 100 springs made up about a decade back, and sold them on the forum....they all went quickly. Jordan Baker found some from Mac Auto that were inexpensive. Unfortunately, he only posted hotlinks to the springs rather than the actual part number, and none of the links work anymore. Perhaps Jordan can recall what application the springs were for. I just assembled some brakes at work the other day, and cmp truck springs were nothing like the carrier springs. The springs Jordan was talking about may be these ones but he will have to confirm:
http://www.macsautoparts.com/ford_me...passenger.html .
Part #: 32-20072-1
Alt Part #: 91A-2035 OEM Part #: 91A-2035
I have used Iltis springs in the past and never had an issue with them, but they are not commonly found these days.
http://www.mapleleafup.net/forums/sh...ad.php?t=10034
http://mapleleafup.net/forums/showthread.php?t=16183