It sounds like he already has the 327. If it's a large journal block, and since 327's and 350's share a 4" bore, buy a rebuild kit for a 350 with the crank and now you have a 350, or buy a kit for a 383 stroker and you now have one of those. The kicker is, it has to be a late model large journal 327 block. I believe the 68-69's were the only large journal blocks.
John