you want to go with a 4 channel amp.
You will want to wire the tweets in parallel with the door speakers then wire the rears to the other two channels. You could get by with a 2 ch but then you can't tune in the rears correctly and you will also have no fader control.E-mail me if you need any help with wiring the system up.unless of course you wire the rears to the head unit.yuck

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Kevin
00' Super Black SE 5 speed
superblackxterra.tripod.com

[This message has been edited by gearhead1972 (edited 07-31-2001).]