i'm actualy building exactly such an engine(i'm just in the process of buying/getting money for the internal parts)
it'll be running big revs with solid lifters and serious cams(will be in a dedicated track car)
i have to be honest, yes i could make slightly more power keeping the 25 crank and it would be slightly more responsive
it would also be a bit cheaper
but there's also fun to be had with being different
it'll have a different character and will sound un like any other rb out there
anyway if i remember i'll post a video and or pics when it's all done
