Nope napa, no rca cables. Either got to screw up the impedance and splice off the speaker outs or get a new deck. sell yours on eBay since idiots are always wanting stock decks and get a good after market deck. ALPINE 9811, end up spending 50 bucks for a better sounding unit. change out the speakers while your at it. the stock one are 20watt paper speaks, complete crap. 5x7 components in front and 5x7 3 ways or two ways in back.
Also if your not totally stuck on a pair of twelve’s these are great subs
sub solution u can still use the back, then again it's just a thought