Is the FE3 considered heavy duty

[ryanusrey2012]

I have a 1998 Cadillac Deville Concours and i was looking for a new CV joint online and there were two options between a CV with heavy duty suspension and one without it. Now i do know that the FE3 suspension is what my car has equipped and that it is called the sport suspension and is more firm. This does not however tell me if my suspension is the heavy duty type or not so any help will be much obliged.

[maxwedge]

For a standard Cad, FE3 would be HD but the parts books can be confusing.