91 zx750 bored out 883cc

i read that the zx9b barrels will fit the zx750j motor, std bore of 750 is 71mm std bore, z9 is 75mm
can they go 2mm oversize that would make 77mm bore 47.3 mm stroke= 883cc
knowing about bore/stroke ratio 77mm around 3" stroke 47.3mm around 2"
i think it would haul,opening up the combustion chamber to the bore size around the valves, bigger valves
megacycle cams 498-x8 in .366" 244° 104° Reproduction of ZX-7 R profile.
ex .355" 234° "
J cams .287" 219°
from .287 lift to .366 ,219 to 244 @ 40 thou duration, use the stock 38mm kehins rejetted
get some unsprung weight out , i always look for potential, on the gixxer.com oiler site 88-90 models 200 engine hp
is available, you just have to know the combo, a guy run 8.6-160 with his street ridden 1216
extended arm , no wheelie bar or slick-said it was on the point of wheelstanding/going up in smoke the whole 1/4