Sounds like he is saying they are using the same high tech weight block, but modifying it for a different RG & diff. So it can't be the same weight block exactly, it IS modified. BUT, presumably is is engineered using the same high tech weight block technology, rather than just using a well used generic. All very interesting, especially if one had been forced to drop below 14, at least temporarily, as I have. Will have me studying Motiv more deeply