Well, it won't be plug and play so to speak, but if you are careful, you should be able to use all of your preamp stuff from the old amp (I'm assuming it works), then put in a LM4780 for 100w of power. You can buy a PCB for that at chipamp.com, but if you wait a little while I might be able to get you one just for the cost of shipping. Brian is sending me some to distribute here.