92 knuckles swap to 86 d30?

Will 92 d30 knuckles swap onto a 86 d30 ? any issues with the ball joints?

yes the knuckles will swap and there won't be a problem with the ball joints.

it is recommended though that you use the 92 hub assembly with the 92 knuckle. might have some slight fitment issues though if you try to use the 86 hub.