On the way back from the coast last night my tired old 350 started smacking a rod into the block (I believe). I think it's time to build the 383 I've been thinking about, but I haven't fully researched it yet. I specifically am interested in the Summit kit, but I don't know about all of the necessary modifications to the block. Has anyone built one of these? I would love to hear what you have to say. In every contest there must be a loser.