To bolt them in you will need either TE27 steering knuckles sourced from japan or the USA, or grab some ball joint taper adapters from techno toy tuning, fit these over your ball-joint, chuck on an ae86 steering knuckle, the strut will then bolt up, swap over the strut tops to ke20 items and they will bolt in :)
http://technotoytuning.com/productdetail.php?p=775