Just remember, unless the front "A" arms modifications are done to facilitate additional upper ball joint adjustment, I doubt your alignment guy will be able to get more than 2-1/2 degrees of negative caster. He will run out of back and forth adjustment on the upper ball joint. The caster adjustment should be done first, as this adjustment will affect "toe-in" and you adjust your camber by moving the upper ball joint "in and out", which will also affect "toe-in".Its a deleicated "balance" adjustment, with toe-in being last of the three adjustments. Camber adjustment "locks" are a good addition to add to the upper front "A" frames at this time. Make sure your guy does his "homework" on Pantera front suspensions to prevent having to do the alignment job several times to get it right. I recommend buying a separate left and right set of upper "A" arms and having them modified by Performance Automotive Technology in Massachusetts. About $900 - $1000 a pair including new bushings if you send them a good used set of upper "A" arms to work with. Buy some additional upper ball joint shims also.