Am in dire straits and would really appreciate if anyone could help me find some cylinder heads to replace the ones on my 5.3 liter 350 vortec. My current ones are the 706 stamped castech heads and I'm experiencing the disappearing coolant issue outlined in the service bulletin, so naturally I am wanting to avoid using that particular casting. In any event, this is my daily driver and(as im sure is the case with many of us) I don't have much money to work with. I recently was laid off so the timing could be better. Anyway if anyone has any heads for sale or suggestions(for free lol) it would be greatly appreciated, my local salvage doesn't have much stock of this type. I will be doing the head replacement myself. Again, thanks in advance!!