Has anyone ever seen a Sony, Kenwood, or what ever head unit that has 4 channel aux input. I have my 76 jeep cj-5 with 2 mtx amps which is fine but I have an extra sled for my 99 ford f250 superduty and I do not really want to tear it apart. The ford stock unit is almost double din size. Maby I'm just nuts but no harm in asking. Thanks