....SVT,SE,LS.

I bought a pair of the cable return springs from Ford because I figure the old ones may be getting tired. These are the springs that wrap around the caliper arm on my 1998.
My cables seem fine.
How can I tell if I have the improved spring? Has anyone compared the earlier to the later?

The numbers are:
F5RZ-2L642-BA passenger side
F5RZ-2475-AA driver side

I know Ford bumps the suffix for minor changes but are there higher letters listed?


'98 LS MTX