I used j30 axles. Getting harder to find them now though.
I think the 300zx axles are too long. You could try using them as cores at your local advance/autozone for rebuilt j30 axles. Maybe its possible to remove the part that attaches to the diff, and swap it with the ones on your 240sx axles. Maybe a decent shop could do it for you.
And if you already have a 5 lug s14, sell me your rear hubs and bearings from that 300zx subframe.
im on aim as "Vkoslak"icq as "Vkoslak"and can be emailed at "
[email protected]"