Thanks for the responses and confirmations from all.
Snooping around the Rough Country site while looking at the trac bar recommendation from before I saw they have radius arms too.
https://www.roughcountry.com/ford-su...html?rrec=true
Seems like a reasonable cost and even includes the following,
"Includes adjustable alignment cam at the axle to allow caster adjustment"
FWIW, they are listed as fitting 05-16
What do the MG castor plates cost?
I noticed major differences in the Carli and Rough Country trac bar. Carli has a nice heim joint where the RC has rubber busings. The heim allows for some shim adjustments for better fit. The RC bar might be a good value if it fits well out of the box.