Sounds like you need information and, if you are serious, need it badly. If you are going to put in another engine I don't think you should settle for a SOHC when there are other stock higher performance options out there.Go here and do your homework first... you will appreciate your efforts and how wisely your money was spent on the project:http://www.amazon.com/gp/product/188...F8&s=booksGood luck!