Definitely a normal Boa imperator with no visible morph influence (could be het but could only find out through breeding and wouldn't bet on such small chances), whether or not it's pastel is debatable. I personally don't like to suggest the pastel label without knowing the snake's parentage, if the pastel lines have been muddied with non-pastel blood, or if the offspring is a particularly low expression pastel. It definitely has a bit of that pastel appearance to it, though. Very nicely bred at the very least.

Gorgeous girl and agree with Gio, 6.5' is not small by any means. Not all boas are set to reach X size, most females average about in the 7' range give or take a half a foot. 8' is large, not necessarily terribly uncommon, but still large.