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Here is the key with Powerhaus: you must agree with them as to when the work will be done, and then you must agree with them how much they will pay you back, or what else they will do to your car for free (or at least cost) if they don't meet the deadline; week by week, they pay you more or do more if they keep missing the deadline. The work they do, now that Bob Holcombe is doing it for them, is superb, but you need to keep the heat on. I know.
As for bigger slugs, good idea. I went with a 98mm bore, and used a 993 crank, which has a 76.4 mm stroke. Displacement becomes 3.5. Low-end grunt, especially with 8.0/1 cylinders, is significantly improved. It's the first engine they've done this way, I believe, and they've told me they'll recommend it again. I only got there because my stock crank had been turned too much, though. Splitting the crank case is expensive.
Again, check around. Holcombe is one of the best in the world. But you gotta be on him like white on rice to get things done timely, becasue he has a LOT of regular, big bucks customers whom he favors over schlubs (like me, for instance).
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