I've got a 31.6 carbon post that's either 400 out 410 long that's I'll sell for 25 posted . only used it a few times on my c456 before getting a dropper. Just a few marks on the lower portion of the post from going in and out of the frame.
Here it is, pics aren't brilliant as they are of my phone. Its a MR Control post, 410mm from the base of the post to the seat rail. I was a bit out with my memory of the carbon thickness and the carbon measures about 3.5mm think . the seat clamp Has a 20 to 25mm offset
Just asked about the forks as I've got a set of tapered revelations I originally bought for the frame I need to get round to selling
Sorry to be a pain just had a phone call from a friend I work with and we've done a trade of posts (I had a spare 27.2 he needed and he had 31.6 that'll suit me).
Thank you for all your efforts though, hope you manage to sell it.