Need rod/stroke ratios

[Snakespeed]

I'm tring to do some math on how to increase revs without loosing torque in my ka24det, but am having trouble finding the different rod/stroke ratios of nissan engines that I could use to change the ratio in my engine. Anyone know the r/s ratios for the sr20det, ca18det, ka24det, or any other engines I haven't thought of? Any info would be greatly appreciated. I'm tring to figure out if I have a longer rod that I could combine with the shorter stroke of another motor to increase rpm. Thanks.