i just recently did a atuo to manual on my s14
S13-1st section (no difference for ABS/non-ABS):
M/T: 395.0mm (15.55")
A/T: 432.0mm (17.01")
S13 2nd section (no difference for MT/AT)
non-ABS: 605.0mm (23.82")
ABS: 590.0mm (23.23")
S14-A/T 1st section = 421.0mm (16.57")
M/T 1st section = 441.0mm (17.37")
S14-ABS Rear Section = 636.0mm (25.04")
non-ABS Rear Section = 650.0mm (25.59")
if you would of google i got this from
S13/S14 driveshaft (manual) - Nissan 240SX Forums