69 Barracuda front RMS suspension issue

I didn't measure the gap, they are still close, 5.72 seems about right. It has longer studs, they do require a couple of follow up re-torque after removal to settle down. Haven't had any issues otherwise.
The 245x45x17's do make it jumpy on the road, always have to be driving it.
Jumpy sounds like nowhere near enough positive caster to me.