Hi, That is an interesting idea I had not thought of. I am not sure it would physically work though. The output transistors are plugged in to a socket which is attached to the heat sink.From what I saw based on the dimensions of the cases for the old vs new, I do not think the new would physically fit? Perhaps I am missing something. Isthere a work around for the dissimilar sizes? Thanks for your assistance. This is quite the daunting task. It has been fun though.