Another small update on this project... Replaced both front and rear swaybars with H&R units with rear bar set on the middle setting. Had the car out at the new track at Thompson Speedway Motorsport Park this weekend and everything felt great. Body roll is much more controlled with the new bars. With the current setup the car was very balanced in the turns, no real understeer or oversteer at all. For most turns I would just trail brake a little on entry to help get the car rotated, then control mid corner and exit with the throttle.
I've decided to run the AST's for the rest of the season, but I'm still researching replacement dampers for next season. Current choices are either the MCS dampers or Penske Racing dampers. Either way, I'll be using Swift springs with the new setup.
Here's some in-car video from Thompson: