It would be done on an exchange basis, with a core charge. The rods obviously would not be new, but rather rods which have had this process done, with ARP studs, and machined to a Nissan spec for use with Nissan bearings - grade 1, and with 0.0002" maximum out of round. They would be ready to give to your machinist for balancing your rotating assembly.
The idea of actually selling something like this is only an afterthought. We're just playing with ideas right now - its fun. =)