RE: Great success. Make your own body shell!!!
IMO to make sure you get rid of all the bubbles vibrate the mold fora bit on a air compressor or something similar. Many many years ago in High school shop we had to make molds for metal foundry (we made monopoly pieces...) and our teacher told us thats the best way to make sure to get rid of potential air bubbles and make sure it gets into every nook and cranny.
I'm kinda tempted to try this with my nephews beat up stock pede body just tape the holes up and I can fix the blemishes with a lil light sand paper after it would dry