Recommendations for a car stereo set-up?

I just installed sirrus satellite in my 64 Dart, radio head in the glove box,did the two 4" speakers in place of the large dash speaker and two 6" in the doors (from previous owner), and a amp in the trunk works pretty good. the reason for sat radio is no good statios here where I live, and I can move it from car to truck,to boat ,to garage

Moe