Any way to get more caster adjustment without newer adjustable CA?

I had my 73 Dart Sport on the hoist for a few weeks while the transmission was being rebuilt so I took advantage of the hoist time and put in all new Moog front end parts. I mean everything. Upper and lower ball joints, upper and lower control arm bushings, idler arm, pitman arm, inner and out tie rods and sleeves. When I aligned it, I used the max street performance specs, but they want up to -3.0 degree of caster to help it track. With the eccentrics maxed out the most I can get is 0 degrees. That is factory spec, but it does tend to wander just a bit. Without going to different, newer control arms that have more adjustment built in, is there any way to get more (or less) caster?