Ok, heh seems I've screwed up already. Was just discussing this site with my Dad and I need to correct 2 things.
1) The Biscayne has a heater, too.

2) It's not a factory replacement engine, it's the ORIGINAL MATCHING #'s engine. I forgot the last part of the story...
After he lost the engine, the car was stored for 15 years or so. It was then finally sold, changed hands a few/handful of times and somewhere in there the original engine was re-united with the car!
I don't have the title or the paper work in front of me right now so I/we can provide exact details later, I just wanted to get on the site to see if anyone had any info about Nickey header color and factory Biscayne codes from '68.
Ok that's it for now, yeah I'm very much looking forward to having this car at a show, it'll be the first time in at least 5 years that the car has seen the light of day.
-Brian