I did it and it is not difficult. The one you have to be careful with is the rear "CORVETTE" , the part you received should have the letters in a Template.
I used a heat gun and Dental Floss, heat the badges keeping the heat gun about 10" away from the Original badges and move the heat gun back and forth so the Paint does not get too hot in one area. Once the badges get warm (about 30 seconds) slide the Dental Floss between the Badge and the Body and move it in a sawing motion keeping the Floss towards the Badge and not the Paint. If it does not come off easily then heat it a bit more.
Once the Badges are off, some 3M Tape may remain on the car, heat this up a bit and remove as much as possible with your fingernail, Clean area with 3M Adhesive Remover or Goo Gone.
Once all the old 3M Adhesive has been removed inspect the paint for any shadowing of the Original logo. You can use some Polishing Compound to remove that.
Once the area is all clean, use some 100% rubbing alcohol to clean any wax / polish off the area. The area is now prepped for the new Badge.
I used green masking Tape as a jig to align the Template that the Letters are held in for the rear script logo. You need accurately measure out where to apply the Tape. You can try and see which method of doing this works for you. I did something like this |______________| and aligned the bottom of the Template to the bottom line and the first and last letters to the right and left lines respectively.
Hope this helps, please ask any question that you may have.