I researched and saw the 2 threads in the faq about this, but need some more insight, I'm selling my subs and amp, possibly to a guy with a pontiac and bose...but I'd have to help him hook it up, and I saw that from those posts it would cost around $100 to integrate it...is there anything wrong with finding a "speaker level to RCA" converter and tap into the signal before his stock sub amp? any help would be appreciated.