Lets think about this for just a minute. Buick did alot of research and developement on the Stage 1 and Stage 2 blocks before they arrived at the last On Center 153 6 bolt version. I'll bet they broke ALOT of stuff on the dynos and the track during development. They obviously made alot of changes in the blocks. Have you ever seen two S2 blocks that were identical?
I applaud Mike T. for his committment to the Block project. Nobody else could get it done. But I beleive they will go through a few growing pains before the kinks are worked out. Heck, It took Buick quite a while to develop the S2 program. And I don't think anybody will dispute that the last S2 blocks/engines were certainly better/stronger than the first.
Just my opinion.
DR