intake
turbo
manifold
cooler
programmable ecu
custom oil and water lines to turbo
is how i did mine. if you use the 25det injectors, you could probably get away with running a stock 25det ecu.
even though it worked, and worked well, you might be better off buying a complete det engine. plus you'll have a spare head etc you could sell. what you will pay for the parts needed will probably outweigh the cost of a low km replacement 25det