The coupe I bought kinda "wonders" going down the highway. Feels loose when I hit little bumps. It is NOT pulling to anyone side like it's out of allignment. More like wobbling when I hit dips/bumps in the road.

What should be the items I check into? Front panhard bar?

Here is what I know about the car I just bought. Frame is American Rails boxed with Model A Cross Member. 4 bar front and rear. Pete and Jakes chrome front I beam axle. Coil overs out back. Vega steering box.