So, it seems my truck, 2004 5.3L Tahoe, has the infamous cracked Castech cylinder head problem on the driver's side. I've decided to replace the cylinder heads with a new cast ing --- not remanufactured (don't want to inherit the same problem again). RockAuto has a new bare cylinder casting made by Enginetech for $237.79: https://www.rockauto.com/en/moreinfo.php?pk=5540868&cc=1424247&jsn=528&jsn=528 I was also able to find this supposed reinforced/strengthened version here for $345: https://www.enginepartstore.com/che...9-05-new-chevy-gmc-4.8/5.3-bare-cylinder-head Does anyone have a recommended vendor for new cylinder heads? Preferably, one which has an improved design like shown in that second link. Thanks guys!