I have a JBL GTO 7001 monoblock amp that does 700 rms at 2 ohm very nice amp i payed 375 for it just last year ill sell it to you for 120 shipped and paypalled
I've got a Diamond Audio D3800.1 I'd sell to you for $125 shipped. It's in good shape and is rated at 600 RMS @ 2 and 800 RMS @ 1 ohm. I sold these for a while and they are strong amps. 3 x 30 amp fuses
Diamond Audio D3 800.1 (d38001) Mono Subwoofer Amps Car Amplifiers Car Audio Car Audio, Video, & GPS Navigation - Sonic Electronix