Good news, MRC are working on a dual pulley set up for the V6T engine. Looking promising so far
How does this differ from what they offer currently? Sounds like they are getting closer to cracking the Simos 16 too which is nice!!
JHM make a lightweight standard pulley & also a lightweight larger pulley.
Could well be interesting times ahead
edit
GMG also make one & it is damped like the OE
http://audirevolution.net/forum/index.php?topic=3734.0
I hesitate to write this because I only recently realised that my understanding of what MRC has been doing was wrong. However if you check out this thread you'll see that what MRC do is to change the crank pulley for a bigger one rather than the supercharger pulley for a smaller one. So their stage 3 is based on using an even bigger crank pulley which needs slight block modification in order to fit, and then additional cooling. Based on what Doug has written I don't think it matters much if you have a stage 2 crank pulley and a reduced supercharger pulley or just the stage 3 pulley since the challenge then becomes how to keep the engine cool.They only offer the single smaller pulley for the supercharger at the minute. This will also include a bigger crank pulley to spin it even faster.
Lower?It's like driving your car 1 gear higher all the time.