Thank you both.
I am getting setup to modify the front upper a-arms in order to get more positive caster and have read the threads on this forum about the process of doing so. I am currently trying to get precise measurements of caster on the car before I cut, bend, and weld my a-arms. I am looking forward to getting better straight line handling and centering of the car on the freeway. I will probably follow this effort with spacers for the steering rack to reduce bump steer. That way I am only making one change at a time.