I think it would be more trouble than it's worth for Keith.
You don't know how often that standard and .001", or standard and X bearing halves have to be matched up to keep main and rod bearing clearances in check.
Or....the occasional thrust bearing that needs sanded because it locks the crankshaft up.
Or....the grinding that has to be done to make crank counterweights clear
oil pumps or pan rails, etc.
Selling a kit to someone that thinks it's going to be "insert part A into part B" could potentially cause a lot of email and phone time for KC (or Club Cobra).