2.5m & 3.5m dry dock?

[Cloakedwand72]

Any Launchable sized stock alike drydocks for ksp?

[kerbiloid]

Do you want just to hide&store the craft?

If so, then 

 

[Gargamel]

If you want launchable  wouldn't some of the Mk3 bays work?  I know it's not exactly the form factor you wanted, but with some planning, they should function as a "dry dock".

Of course, you're going to need to specify what you mean by dry dock.  It's quite open to interpretation.