that was really helpful, i was wondering what all i should tell the machine shop and/or have them do, i am going to call my local junkyard guy this week to see if he has any vortec heads(i no i would need a different intake) and then drop the parts off at the machine shop, i figure i'll get them to check everything to see whats reusable and then have them install the cam bearings, pistons, ext. anything else i should watch out for, you guys are awesome