will these work in my e36?

[3x Beemer]

I'm looking to upgrade the sound coming out of my e36. I've been looking at these hertz esk 130 model, with the tweeter and 5.25 speaker.
I just have a stock HK amp and everything right now..not really looking to spend too much.
I realize i still have to buy the 2.75" door speaker as well... but what i'm asking is will these wire right up to my stock system? Thanks In advance

http://www.woofersetc.com/p-9622-esk-130-hertz-525-2-way-component-system.aspx

[doogee]

You'll need an aftermarket amplifier to run those since they require their own crossover.

The stock amps have their own built in.

Also these speakers are 4 ohm. I believe the HK amp is 3 ohm.

[3x Beemer]

Ah alright thanks, didn't think it'd be that easy. I might as well just wait and do everything the right way all at once. But don't they come with the crossover? I really don't have a clue when it comes to stereos..I thought thats what the box was they come with.