Hard to say, and I don't have the original estimate handy. But we're already into things that wasn't on the original estimate.
My job was to do the disc brake conversion , get it running and complete the underhood area. but we're already past that

but with the unknowns with the engine it was felt best to pull it apart now and investigate as opposed to later when everything was done.

Why do you ask,,,,,,,,???
pm me if you prefer