mancini or jeggs leaf spring xhd 340duster

72BBSwinger said
Are the AFCO's a 20.5 front segment springs? They offer a HD front segment spring I think may be better at controlling wrap.

Yes, 20.5" front segment. That's why I went with them, they have a reinforced front section. Plus they actually spec the spring rate and the arch.

The 20231m's I have are 121 lb/in springs and have a 6 5/8" actual arch. On the car they sit slightly above zero arch. That's on the Duster though.