That fucker an't a Mod. I don't know what you are thinking...
Most turbo kits for the KA are not ideal or not complete. The Greddy only works on OBDII KA's till about 10psi then creeps like mad. You would have to do a lot of work to get it to work on the S13. Which is not worth your time.
I would get a Top mount manifold like Peakboost's.
http://shop.store.yahoo.com/cheapturbo/nikacoso.html
GT3071 .68 AR
http://shop.store.yahoo.com/cheaptur...ttgt3071r.html
S13 SR FMIC
Tial WG
custom DP
720 injectors
There are other forums that you can find better info than I can give you. NICO an't one of them.