need help with my system for the car. are these tweeters the right ones?

[jjons]

i have a 1000watt Kenwood amp for my 2 JL W1's. but now i want to install a set of tweeters to help with the sound. i have a specific kind in mind, but i'm not sure if my amp would be able to handle them due to the ohms situation. i h ave no idea how to calculate the ohms or have any idea what an ohm is for that matter. the specs to my amp is
- 2-Channel Power Amplifier
- RMS Power Rating:
* 170 Watts x 2 Channels @ 4 Ohms
* 250 Watts x 2 Channels @ 2 Ohms
* 500 watts x 1 Channel @ 4 Ohms (Bridged)
- High-Pass Filter: 50 - 200 Hz, 12 dB/Octave
- Low-Pass Filter: 50 - 200 Hz, 24 dB/Octave
- Variable Bass Boost: 0 - 18 dB @ 40 Hz
- MOSFET Switching Power Supply
- Cooling fan
- CEA-2006 Compliant
- High- and Low- Level Inputs
- RCA Preamp Outputs: 1 Pair
- Tri-Way Capable (Crossover Required)
- Frequency Response: 20 Hz - 20 khz

and the specs to the tweeters that i want are
- 13/16" (20mm) Tweeters
- Power Handling:
* Peak: 120 watts
* RMS: 40 watts
- PEI Balanced Dome
- Supplied with In-line crossover network
- Surface mount only (includes an angled mounting cup)
- Easy step up for High-Frequency Sound
- 4 ohms impedance
- Top-mount depth: 1-5/16"

would these tweeters work?? or would i need get a new amp run the tweeters??