How to modify a STEP file in Inventor 2010

Please could you all help me how to. i can open STEP files in inventor (2010) but can not modify at all.
fyr: Honda GX 160
i want to replace this exhaust for my custom, but i can not!

Thanks & regards,
Phil

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3 Answers

You wont have access to sketches or anything like that. All you can do (in my experience) is use extrusions, move faces, delete faces, etc., to modify it.

 
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Dear Nuno Felix,

Thank you for your answer

Regards,
Phil

 
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Try KeyCreator.
It allow you to modify any solid from any CAD.

See video:
https://www.youtube.com/watch?v=2PJDHxZqTgQ

 
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