I have a set of vortec heads that have less than a thousand miles on them since I had them rebuilt with new valves I had the guides cut down, 3 angle valve job and Z28 springs on them they ran great but I went with a aluminum headed solid roller cam set up on my 383 so now I have these and no short block for em they also come with a summit stage 3 air gap style intake for the vortec heads with arp intake bolts any questions just ask you can email me at twisselman1968@hotmail.com I would like 600 for it all plus shipping but I will only charge you actual shipping and a tiny amount for boxing them up well thats a starting point so lets go from there