I have a Nathan K5La REAL train horn on my 2012 Tahoe with a 5 gal tank. I've had this horn for over 16 years. Since I'm selling the Tahoe, I'll be installing the horn on my 2020 silverado. My question is where would be an ideal place to mount each bell? I have them each on their own mounting bracket (5 horns). I'm sure the air tank will go where the spare tire is currently at same as the Tahoe, Buyt I'm not seeing a lot of room under the hood to install the compressor. I don't want it exposed to the elements as the intake can also suck in moisture from the air which will cause the compressor to fail.