How to edit geometry of the assembly drawing in Pro Engineer or Ansys Work bench or Solid works?

I have already been provided with the assembly drawing and I want to change some of its dimensions, the files are in Catia format. I have Solid works software and I can also use Pro Engineer for the edition.
I am also attaching the file in Step format

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2 Answers

I'd remake the two files in SolidWorks, and then make changes to the sketch dimensions.
Both parts look like simple revolved profiles (sphere and cylinder with a curved face.

 
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Syed,
What are the dimensions you need the new files to be?
What version of SolidWorks are you using?

I've attached the current dimensions (in inches)

 
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