u will be connecting ur subs in a 2ohm configuration......
now v need around 800rms @ 2 ohms
SO the specs u need to know of both amps:
1) Kenwood = 919 watts RMS x 1 at 2 ohms (if u connect ur subs in parallel, each will be getting around 459 rms under ideal cases with proper wiring and a trouble free battery and alternator)

2) F2000 = 350 watts RMS x 2 @ 4 ohms (u can connect both subs separetly on each channel, both will be getting 350 rms each)

POINT's TO NOTE:
1) The kenwood is a mono and the SA is 2-channel. Monos are more efficient in tearms of power being given to ur subs
2) The kenwood is a CEA approved amp.. meaning it will do the wattage mentioned
3) SA's are over-rated. Also being a 2-channel, dnt expect that ur subs will be getting all of that 350 rms
Conclusion: The kenwoods a better choice amongst these 2... :D