Koni FSD first impressions E450

I had rear Koni FSD's installed in the rear of my 24' Chevy 4500 at 3,000 miles. Made a trip to Richmond from Central Fl. The rear rode nice untill I hit the Carolina's on 95. The front end porposed so bad on the rough roads that it knocked out the antenna on my sirrius radio. I had the fronts installed 3 weeks ago and went to S. Florida on the tpke and noticed a big inprovement. Running into a rainstorm and heavy crosswinds kind of created that old pucker factor and slowed me down. The 19th of this month I'm having a Safety Plus steering stabilizer installed and hope I cure the white knuckle effect. Win or loose this is the last money I'm spending. Going to Pensicola at end of the month so I'll see how it all worked out.