Well I have the heads off the car and theres not a spot of port work. In fact there is so much caked on oil I dont think anyone ever changed the oil in this thing.
If someone is so worried about it being or not being a 306 I would suggest tearing a head off. If you dont want to do that then take a hit and say it may not be a 306 instead of beating around the bush saying you dont know what parts are there. I am an honest seller, I have never taken advantage of anyone and I always state the condition of the parts. This type of situation isnt pretty for anyone.