@ken whellams asked:
"Has anyone else added weight to the front end of their cars to settle the front end at higher speeds?"
A few people on here have added weight to the front of their cars, pushed as far toward the outside front corners as they could. I think @Jim Gilbert - Madison, Mississippi did something with fancier weights on his car, too.
Usually, high speed lightness can be helped greatly by adding additional caster to the front beam by installing caster shims behind the lower torsion bar tube.
https://www.cbperformance.com/product-p/6215.htm
Tell the alignment tech that you want between 5º and 7º of caster after installing one or two shims per side at the bottom of the front suspension beam in order to get your car more stable at speed. It's best to get an alignment shop to do this, but they won't have the shims in stock. Buy them and take them with you to the shop.
Get your front suspension set up right first, and if that doesn't make it stable at speed then go the additional weight route.