Cores for RB can be any where from 200-900 today depending on the tag and if the internals are right. Remember also they arenot all clocked the same. Have some pluss the core. Not the one you are looking for. If it was me I would set up a single point with the same curve untill you find the one you really want. Might take years. I have three people looking fo that number still for a few years.
FOR SALE - Reconditioned Mopar only distributors
FOR SALE - Reconditioned Mopar only distributors