I was wanting to go with those heads, but I was told that the valves could potentially hit the cylinder walls since it is a 352 and was only bored .030, putting it around 4.031. The 360 and 390 block are 4.052 so even with mine being bored the heads will not work. I did have my stock head reworked on the rebuild so they already have hardend seats. I had the rebuild done a couple years ago and did not know about the differences in the bore, I thought they were the same. I would rather go with the edelbrock heads, but it kinda looks like I will not be albe to, that is why I was going to have them ported. Is there any thing else I could do? I have put so much money into what I have I would like to make it work some how.