i picked up my 2000 impala LS a few months ago and it had a built in amp for the high's and mids but there isnt any writting on it telling me its power capacity...im just wondering if i can upgrade my highs and keep that amp or if i will for sure need to replace it
OEM amps are trash. Unbolt it and sledgehammer it. Then put a new amp in its place or bypass the wires. Of course, you can keep the thing in your car if you're running new speakers but it will severely limit the speaker's potential.