The studs, instead of being firmly swaged int a steel hardened axle, are now only pressed into a thin aluminum spacer. Plus the wheel is now held on with cantilevered studs. The wheel spacer is, in my opinion, rube goldberg, and any engineer would not recommend it. As above, your car, your life, you decide.
Bite the bullet, do a proper conversion, or buy sbp wheels - if you have to get a custom set of wheels (stockton wheel?) and be done with it. You would be much better off than having cobbled something together.
