Hello.  I have a question.  Can I use stock car parts as the mold itself for creating carbon fiber parts? Some of the parts I want to currently make are:
Spark plug cover
Air box lid
Car emblem
Interior trim body pannels
Stock mud flaps
I currently have those parts but I'm not sure if I need to create a mold off of the original part and then create the carbon fiber part off of the mold, or If I can just use the original part as my mold.  I will be doing  the resin infusion method to create the carbon fiber parts.
Thank you in advance.

You need to make a mould off your stock parts, then make your carbon parts out of that.