some one gave me a nice factory stereo form a bj74. My old stereo has a label on it that says 24v, the newer one says 12v. I have an 88 model that is 24v and I know that the other model is a 24v model as well, but it maybe newer so could it be stepped down before the stereo and if so can I adapt mine so that I can use the factory stereo with its harness. please no aftermarket ideas as I want to keep it simple. thank you . ps has anyone tried to use a fm phase band shifter for jdm radios?