Unfortunatly I think the 340 cam is shot. The cam bearings had some very uneven wear on them, so pretty sure the cam needs to be polished or replaced. So the lifters just got tossed into a box.
Are the KB pistons the only ones recommened? Im on a budget and spending $350 for a set of pistons is tuff, let alone spending the 250 on the cam, lifters and springs. $500 or so isnt bad, but it all depends on what the machine shop comes back with on what needs to be done with the engine.