to answer walien's question about the factory amp...not sure my car had a clarion cd head unit in it when i bought it..it has way too much power for the factory speakers...the former owner removed his amp and subs

(i can see where they were mounted)but the clarions built in amp was too much for the factory speakers...the infinity's sound great,and can handle the power..so i'm sure they will work fine with the factory amp..