I would get the door speakers replaced before getting subs. Some door speaker components can actually sound resonable being run off a good headunit. Getting another amp would be advisable before adding a sub.

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-98 Contour SVT
-Silver
-Sony MD deck
-Earthquake EQ
-2 sets of component speakers
-2 10' mtx woofers
-3 Amps
-P.A. system with animal noises!
-J_graham@pacbell.net

SVT with CE light mod and a camera mount.
Naughty Pictures
Why yes it is true, I am on my third engine.