I get where you're going, but imo its not that critical for a swap. If you get the 'pitch' fairly close to zero or a little tilted back and the trans output and crank pulley are centered send it.
The height the crank is gonna need to ride at is dependent on a bunch of stuff, trans tunnel clearance, oil pan clearance and any other clearances that need to be dealt with.
I think in favor of making the height and left/right measurements independent just measure the hypotenuse and make it a little simpler.
Yeah thanks, I kinda know that it's gotta go where it's gotta go. I would like to know height wise how I'm at compared to a stock. If I was low or close then I could get more room w a car intake and raise it up. If I was already high then I would leave the height and try something else. It would be nice to document the position for others though.