Shelby18-69

After watching many tutorials I'm still struggling with the following task. I have a 1969 Shelby and I want to "remove" the hood and place it on the body of a 2018 Shelby. How do you recommend I "copy" the hood, transfer it to the second photo and resize it to fit the body of the newer stouter vehicle? Thanks for your expertise...I am a retired physician and very new to this incredibly powerful photo-editing world. Brad