HD Bilsteins would be preferable. If they make a difference in ride height it will be slightly higher than what you have with worn out shocks, but this will put it where it should be. This is because worn out shocks have lost their gas pressure which can have a very slight effect on ride height.
This means that if your shocks are gone, they have lost their gas pressure and new HD's would restore it to stock. Do not use Sport Bilsteins because they are shorter and designed for shorter springs such as the Sportline items.