Original bore and stroke
58.5 x 50.6 mm
new bore and stroke
59.5 x 50.6
so, 3.14*(29.75^2) * 50.6 (pi r squared x stroke)
= 141 ish
*4 (4 cylinders) = 563ish cc's.
(sorry, just wante dhim to be able to figure it out on his own, Sam
Don't forget to round off randomly and use "ish's" a lot to show people you really know what you are talking about! That's how I do it!
Fuzzy math = win