55 308 engine block missing the main bearing caps


There is a 308 block listed for sale that has been hot tanked and magnufluxed for cracks, however it does not have the main bearing caps. I am guessing that this would involve sourcing some caps from a donor engine which be milled to compensate for sizing then line bored to accept the new bearings?
Anyone out there gone through this procedure and how difficult was it ??

Dave