Emailed PE and received the following reply:
"Hello,
I pulled one of these from stock and measured it. the sub in the link below should be very close but a little bit better quality overall. You should not need to upgrade the amplifier though.
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-204
Thank you so much for your business. Please let us know if we can be of further assistance. "
Very quick turnaround time, helpful, and courteous. Wish all my customer service interactions went this well.
So looking at 79$ to fix a 155$ sub that was ok, but not great to begin with. Since I was looking at upgrading before this happened thinking more about just upgrading to a "real" sub

Well next month, fun money is going to new tires this month