This has been covered heaps on this forum, a search should have turned something up.
Anyway, S13 LCA is far too long for starters, try changing it out for an R31 LCA. Also the standard castor arms probably aren't offering enough castor. Might be time to look into some aftermarket ones. You will be experiencing bind, this set up usually works better with cut and shut S13 knuckles as MOST guys that do them (JDI for example) drop the knuckle pick up as well as shortening it, hence changing the angle of your rack -> tie rod -> tie rod end line.