Doug,
A few errors with your documents forwarded about your engine.
First of all, what you forwarded and are claiming as "dyno sheets" (ie. engine made 477 hp.....etc.) is simply DESKTOP DYNO.
MY DYNO SHEET - EXAMPLE
Secondly, you state the block is standard bore BUT the engine has seen two rebuilds in a short life span with neither of the pistons manufacturers stated building custom sized pistons - at least for rock bottom prices which your sheets suggest! The crank was turned (if it wasn't there would be no reason to nitrate it) but the pistons were also replaced - this doesn't add up. Either way, there is VERY LITTLE CHANCE that your engine is Standard Bore like you state.
Thirdly, you don't have airflow data on your heads, once again, what you provide is simply data imputed into desktopdyno which is why your "paperwork" show the pages in succession from 1-5.
Fourthly, the build sheet you supplied as such is not even remotely close to that - it's simply a hand written breakdown of some work that was done. Here is a link to what a build sheet looks like
MY BUILDSHEET
Best of luck and wishes selling the car - it looks really nice.