EG n DC2R front crossmember any different?

hi guys, just wondering wats the major different between the EG n DC2R front crossember n lower/upper controlk arm? r they interchangeable?

subframe n lower and upper control arms are interchangeable.

any slightly different between those 2??

i believe the DC2R upper control arms are very slightly aimed forward and at positive caster - someone can confirm ?!

Front subframe is different and has an extra brace. Dc2r steering rack is also different