I have an engine assembly that I am working with. I wasoriginally a Catia5 file. My customer translated it to a SolidWorks(2007) assembly so I could work with it. The total of all files inthe assembly = 352,322KB! I am trying to get it down to a size Ican work with. Any suggesting would be appreciated. I trieddeleting all parts I don't need and saving it as a SolidWorks partfile with the "Exterior components" option, but the file still endsup be 250 MEGs in size takes forever when working in a drawing.

Does anyone have any tips as to how I can get this file down insize? Should I be saving it as a SolidWorks part file or is there amore efficient way?
SolidworksGeneral