Hey motor don't buy anything until he is done with all your machine work, your going to have to buy the gaskets, pistons, etc to the new bore. Something else I didn't consider when I rebuilt my first and that was all the cost it would take to rebuild one vs. buying a crate motor with the performance already done. Save your receipts of labor and parts, you will be surprised how close or how much more the rebuild will cost vs. a crate motor already set up with what you want.