i got a old school hifonics isis amp in the f/s section for 210.00 shipped...it would be real close to the watts you need ,..
2 x 100W RMS @ 2 ohms (
1 x 400W RMS@ 2 ohms bridged / TYPICALLY 1x 500W RMS @ 2ohms
i have some other ppi amps (not any 300.2's or any of those type ppi amps) , but i dont want to part with them just yet.....but money talks...lol