I read up a bit last night and found a good article about it. It was a 3 series article but I only found the first. But it explained the changes I needed to know. It said, and showed, that 69-86 I think placed the Alt on the passenger side. The photos I saw showed it sitting just below the valve cover. PS pump was in the normal low spot. This was the long water pump setup. I have nothing on the front of my motor yet so may go this route. I'm curious if there is a PS pump braket that will place it up just below the valve cover like the Alt so it's even looking. And yes, the heads on my 327 are Dealer OTC Angle Plug Double Humps with the accessory holes. Believe they were sold in 1970-71. 3991492 is the casting numbers