Bob T.
Just to clarify: by "wet manifold", you mean the water crossover is on the Cleveland block and the W. transfers water side to side by the manifold?
To be clear - have complete 
CLEVELAND engine and want to substitute 
just a Windsor block, using as much C. stuff as possible. 
Would a Cleveland crank work in a 9.200 deck, 2.750 main Windsor? Is a C. internally balanced? 
Not familiar with 
oil probs you refer to, but the W. block under consideration has no such issues. It's a premium, race quality piece, not a boneyard core.
Excellent tip about about the pistons, however, might the Cleveland pistons work in the W. block at 4.000 bore?
Thank you for your time and effort. Appreciate your patience.