No, no and no. This has been covered numerous times here on this board. You can not simply put in place another transducer which has different parameters than the original speaker. Speaker cabs are deisgned around the actual driver that is going to be in them.
Please do a search for either T/S parameters, or, Thiele-Small Parameters.
Even if you could replace the basket with one that could handle more wattage, I doubt you'd even hear a difference. You'd have to double the power in order to hear the difference.
Stick with what you got, replace with OEM components, and if your not happy with the output, upgrade to better speakers within the Peavey family.
Tom in Baltimore
8 VR218's, 6 QW218's, 6 QW2F's, 2 QW3's, 4 QW1's, 4 QW215's, 18 VR112's, 16 QWmonitors.
14 GPS3500's, 6 CS4080Hz's, 12 CS4000's, 6 CS3000's, 4 GPS2600's, 4 GPS1500's.