I now am running both upper and lower aluminum double adjustable control arms on my '03 Rubicon. They bolted on easily and alignment was a snap for the Technician at the local Goodyear Tire shop. Here are a few pics of the results.
Duroflex vs. OEM
Duroflex vs. ProComp
On the alignment rack
Look at those numbers!
The handling is a night and day difference. What a superior product!