Originally Posted by hand-filer
After 30 years of gutting every factory system and replacing it with a custom system in every new car I have purchased, I have given up trying to create an enjoyable listening environment in a car. It aint worth the money.
Not 30 years here, but ditto on the rest. It's pretty much burning money, unless you can justify the cost with your enjoyment of it over the life of ownership.
With exception of an equalizer and ironically, a Sony amp from the early 90's, none of my equipment ever jumped cars either. The eq and amp lived in 4 cars.