Coilsprings.com(Coil Spring Specialties) is the current preferred place to get springs from, you call them and place an order for exactly what you want and they make the spring based on the codes on your current springs.
The other choice is Eaton Detroit springs, quite a few customers of theirs have gotten the incorrect springs when ordering, the company admits no wrong doing. In general they make trying to get the correct spring hard, one would assume that is to just make you give up.
I got lowering springs for my 2005 CVPI from Eaton, they sent the correct rear springs but not the front(I ordered 1" drop, they sent stock height), it took me months to get the correct springs.
Posted:4/26/2014 21:36