Nice work on your build...looking forward to seeing what else you have in store!
If you are able to find the heater hoses for a 2012 Camaro (I believe its ACDelco Part# 22962570), it will allow you to get them off the top of the motor. Here's an old thread that walks through the entire process:
https://www.camaro5.com/forums/showthread.php?t=183191
Although, just a warning...once you do that it will probably lead you down the path of cleaning out the rest of the clutter under there.