2001 B1500 - who makes the best OEM leaf springs. Manufacture with quality springs

 

Here is what I got from sdtrucksprings.com - they are in DuBois PA.
This was years ago, but here are the part numbers for the "upgrade"

4 x U-Bolt by Measurement (c-ubolt)
Bend Type Round
Rod Diameter (A) 7/8
Inside Width (B) 2 1/2"
Leg Length (C) 8 $71.80 2 x 1998-2003 Dodge B150, B250, B350 - Leaf Spring (Rear - 5/1 Leaves) (34-1417) $415.46 2 x 9/16" Diameter x 5" Length - Spring Bolt w/ Nut and Washer (Pack of 4) (334-762) $15.90 3 x 5/8" Diameter x 6" Length - Spring Bolt w/ Nut and Washer (Pack of 2) (334-774) $26.85 2 x 1978-1993 Dodge B150, B250, B350, 1983-2002 Ram Van, 1982-1999 Ram Wagon Over 1,800 lbs. - Rear of Rear Shackle Kit (MCD1671)

you probably have to call them and give them the info above...

 

Ok, thanks for the info