Duh-of course we do! I'll check out the spare block when I get home, but I don't think it will work.
I'm thinking a real heavy bedplate, cross bolted through the outside of the block, into the mains, with a center main splaying out parallel with the webs, like Chris mentioned.
The cross bolts could go through a 'plate' on the exterior of the engine, to help 'spread' out the load.
Anyone think of a reason this won't work?
Of course, I'm REALLY open to ideas here!