[tbirdtbird]

Welcome and enjoy the car!

Do a search on here for front end shimmy, there is a list of causes.
Box may need rebuilding but before you leap to that check things like
- tightness of pitman arm pinch bolt
- tightness of ball adjusters on each end of tie rod and relay rod
- toe in
- loose kingpins: either worn or lock pin is loose
-tightness of steering box -to-frame bolts

etc etc

there is a list on here somewhere

it helps to have a second person gently move the wheel back and forth while you are underneath looking for lost motion. trust me, you'll find it