I believe what you describe is possible. When I first got my car it had a leaking rear main seal. My dad and I changed the seal out in just the way you describe. We did it with the car up on a hoist. I don't know how well it actually worked though because I never drove the car very far after that. The car went into storage for several years then I restored it. The engine was pulled for a complete rebuild.
[This message has been edited by BD (edited 03-22-2004).]
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