I have done some searching and cant seem to find a diy or a list of sorts, just something saying you can have the rear's redrilled. Is that what you do to the fronts as well? Or is there a hub assembly from another car that one can just throw on there? what about the z31 front and rear? could I take parts from one of them? Thanks.

Ok so after doing more searching, this is the best ive found. seems legit. only problem is that ross of mm has had some health issues, so that 35mm spacer may need to be sourced from somewhere else. Im sure if you have tried to go to mm.com it comes up at go daddy. but here is a link to the thread on hybridz.org

4 to 5 lug swap options - Brakes, Wheels, Suspension and Chassis - HybridZ