Any parametric modelling plugins for max?

I have alot of models that use the same kit of parts but some parts are different widths (See attached image)
Does anyone know of any way i can automate the building of them in a parametric system similar to that in revit where you import an excel spreadsheet of values?
Im thinking maybe railclone can help with the parametric modelling?

Thanks
Jack

post it on the Railclone forum.

I saw some impressive stuff done with the Max Creation Graph, however I am not familiar with it at all.