if you use the search button it will explain all, but heres a quicky

you will need (efi)

turbo (recomend t25 as there cheap)
turbo manifold
dump pipe
oil lines
water lines (if water cooled)
efi system
ecu
pod airfilter
bov (optional)
intercooler (optional)

if carby blow throu

turbo manifold
turbo
carby hat
carby (holley 350 is good)
dump pipe
pod airfilter
bov (optional)
intercooler (optional)


if carby draw throu

turbo manifold
turbo
carby hat
carby (su's maybe)
dump pipe
pod airfilter
bov (optional)

theres more stuff just cant think of it, you can also work on the internals of the engine but not necessary i run 15.5 psi on a stock bottom end no probs yet and theres a guy in tassie running 30 psi on stock bottom end. but forgies are the way to go