What is the impedence of the subs? 200 watts between two subs is not a whole lot. If they are relatively high efficency then the subs may be ok.Its not essential to match rms imo. As long as you dont want more vol then the equipment safely put out its fine.
This guy will put out a bit more power
http://www.cardomain.com/item/JBLGTO754II
or this guy if you dont mind factory renewed.
http://www.cardomain.com/item/KIC04KX65042