Heck yeah it does. I've got a Sonnet 400 in box and Sonnet 500. With a Sonnet 500, 64GB SSD in there and 128MB RAM I benchmarked 900% better than a stock TAM. Gotta love having 45GB of music on there.
Do you have the PCBA riser for the twisted sister ethernet adapter? If not, they are IMPOSSIBLE to find. I literally bought two TAM's for those cards and resold them to people who didn't care.
I think I've got 5 TAM's right now probably a few too many