building a new engine hatch and the existing has a harwood blower scoop on it.

for reasons i don't want to explain now (after build thread and pics it will be obvious),

i need a pretty accurate height above crank for various set ups lets say, a 177, a 250, a 6 and 8-71, (don't know if 6-8- 14's are different heights, is why there thrown in)

thanks guys,
dan

From the china wall, to the top of my flame arrestor, is 24 inches. B&M 420 blower, with superchiller.

thank you