Peanut port or Large Oval????

[tomsC10R]

Does anyone know off hand if these are the peanut port heads or the large oval port heads?

The casting number is 473328, which according to Mortec is a 68-69, "oval", Open, from a 366 tall deck.

Here's all the info on the passenger side head starting from the rear.
B1-78
GM1T
TRUCK
473328


Oh yeah, is there any difference between heads from a tall deck block compared to heads from a regular deck block? My block looks to be a 402 regualar deck.


Thanks