If you're personally attached to the L67 motor take it to a machine shop. Some shops have ways of determining if the block needs to be machined. After breaking the motor down some new parts are required. Even without any machining required the rebuild will still cost a minimum of $800 if you do the work yourself. If you don't have any experience building engines then I would strongly suggest not attempting until you do some research. It's not as difficult as people claim...just need to prepare yourself and not take any shortcuts.
If the shop says it needs machined then tell them to throw it in the scrap pile. Cylinder boring, Align honing and rod resizing can get expensive.
