^I have a feeling those might be too long with adapters. If axles are too long they'll bind and likely pop the dust cover off getting grease everywhere.
Some good info here regarding axles.
http://www.nissanroadracing.com/show...?t=4746&page=6
Here are some lengths from that thread. I have some R32 GTST axles I can include to this list when I get around to measuring them.
S13 left - 23" compressed, 25" relaxed
S14 left - 23" compressed, 25" relaxed
J30 left - 23-3/8" compressed, 24-1/2" relaxed (early J30)
350Z left - 23-7/8" compressed, 24-3/4" relaxed
Z32NA left - 24-3/8" compressed, 25-1/2" relaxed
Q45 left - 25-1/8" compressed, 26" relaxed (early Q45)
S13 right - 25" compressed, 26-1/2" relaxed
S14 right - 25" compressed, 26-1/2" relaxed
J30 right - 25-1/4" compressed, 26-1/8" relaxed
350Z right - 25-1/2" compressed, 26-3/8" relaxed
Z32NA right - 26" compressed, 26-7/8" relaxed
Q45 right - 27" compressed, 27-7/8" relaxed