First up. Just wanted to let all of the M guys know, we've got mods for you! I have lightweight crankshaft pulleys for the M35, M35 Hybrid and M37. Check out the thread. They're gorgeous. Greg has a staff member reviewing one in the near future.
And on to the M45 guys. I've started a group buy on one of the crossover forums for the VK45 guys. If you guys are interested, I can include you on the group buy interest list. I need to know who is seriously interested in this part. As soon as I have specs and pricing, I'll post it on the forum, then see who wants to leave a deposit. The higher the number of orders, the better the price.
Here are some pix of the 35/37 pulleys:



