Do a Google search for Five Star Engines. Read several postings on them. I'm looking for an engine myself. A sbc 327. I've looked at Ebay too. I also looked in Craigslist. Through Craigslist I've found a few shops near me that build engines. Some of them even invite you to visit their shop. So right now I'm between having an engine built for me or building it myself. If I was you, I'd find somebody local you can visit and go back to if you have problems later.