Not aware of any out of the ordinary issues outside those normally found in any older car. The L-82 was the upgrade HP rating - not sure exactly what it was in '77 (approx. 200 IIRC).
What kind of shape is it in? Matching numbers aren't as important in that year as they would be in a more "vintage" model, so a rebuilt/replaced engine could actually be a good thing depending on what you're looking for.
