Rothwell SUT & 103R

Anybody know if the Rothwell trannies being advertised here on agon now ($300 new) are a good match with the 103R?
I can tell you that Peter (the fellow who sells them) is a great guy to deal with, and would never steer you wrong, he lives here in Vancouver and I have done a lot of business with him, he is pretty knowledgeable when it comes to analog. My advice is to ask him directly.