some advice/ opinions please

If I did my math right, a 44 year old engine would be around a '69. If its all original, the head would have spark plug tubes, (commonly referred to as 'drool tube' heads) and have the desired combustion chamber for these heads. However, I've heard said they have thinner runner walls than the later, non-tube heads ('peanut heads'). Just a little bit of info for ya. If you read on slantsix.org, there is tons of information on builds, and what they were built for. Here is a link to an engine build matrix, http://www.slantsix.org/forum/viewtopic.php?t=23314