P3D212 and Blaupunkt AMP1501 and Kinetik 1200 to 2002 Audi A6 with Bose

Newby to forum seeks car stereo conversation. I already got my gear and probably my install wiring, too. My main question is whether il want to replace the Bose sub or just and the 12. Thanks, Markway

:welcome:

Thanks.