2.5l questions

[Cody Forbes]

I just did some math, and I'm confused about the 2.5l stroker 5cyl setup.

An MC is claimed to be 2,226cc, with a bore and stroke of 81mm and 86.4mm respectively. 

The EuroVan is listed as a 2480cc with bore and stroke of 82.5 and 92.8mm.

Now if you do the math with the 92.8mm stroke in the smaller MC's 81mm bore you end up with 478.198cc per cyl, 2391cc total if you round up.

I also heard something about using the turbo diesel crank to do the 5cyl setup, but according to my bentley the diesel had actually the same stroke as an MC, but a smaller bore. 

Am I supposed to be working off of the NF block & 82.5mm bore, which of course is the same spec as the EuroVan?

-Cody