I found a complete, unknown mile 5.7 out of a 300C, beware Newbe questions coming...what are the particulars of this engine, I would like to use it for acstreet/ strip build to go in my 67 Dart, does this have useable heads? Any other specifics that I should know...it is complete less harness and computer, etc...guy wants 1000 for it, came out of a running car. Thanks in advance