Jerry- the sc901 only had 10 speakers in the C70 models. In the S/V70 it was 8-9 speakers, & you could probaly add the amp in the trunk, but it's probably $$$ and not too powerful. The bumper mounted antanae was also in the C70s I believe. The amp for your radio is located under the passenger front seat. It's a 4x50 watt amp. The radio itself has a 25 watt amp that powers the center channel on your dash. In the c70, the sc901 had a 4x100 amp in the trunk. As for the items in your display, i'll have to check my manual any see what it means, but maybe you could try and de-activate it to see if reception improves.