Hey guys how's it going? i've got a 5.7 vortec and im trying to figure out what cylinder heads to put on it. I'm looking for more performance and im also going to rebuild the bottom end with maybe a minor bore. not sure on that though im pretty much wanting to make in the upper 300 to low 400 hundred horses reliably the reason im asking is because its buring oil because i belive the valve guides cracked and i just want to rebuild it for the experience. ive done a few rebuilds before but nothing like this and i feel confident to take on this job. I'm hoping some of u engine gurus can help me throw some ideas around.