You should really have some better springs under those 1.9 rockers, you won't be able to tell valve float until u see it on the chart of a loaded dyno. I'd keep the shift points stock if still on stock springs.
I can't see the scans right now, ill look later.
I thought that too. Dynoed (mustang dyno) 7000 miles ago and it pulled strong all the way to 5900 rpm.
On a sidenote mufflers rusted through, looks like its time for an upgrade.
Regal GS Intake Headers 3.5mps pulley 1.9 rockers ZZP throttle body and Blower Wideband DHP