Best way --- hide it. The one on my '32 Ford is mounted on a bracket off the transmission.
The one in my (since sold) Nomad - was under the dash mounted on a bracket off the steering column -- with a feed thru the firewall.
Many coils DO NOT like to be laid on their sides --- some have oil inside that can leak if you do that. I only use the newer style coils ....
These come in BLACK as well.....