Pm me, Moded my l20et pretty heavily. Dont use rb20det injectors. It isn't worth the hassle. I had some vg30et injectors i was running. Got them pretty cheep. (under $50)
Most l20et's in NZ use the normal Optical CAS dizzy.Same as the l28et's All ive seen use this. Same with mine.
I was running the vg30et injectors. 22deg BTC, Ported shaved/smoothed intake manifold 60mm throttle body, (port matched to manifold) rb25det FPR. Walbro 044 fuel pump. Located the afm to the front of the turbo inlet. Ran a rb20det turbo. 16psi. Made around 200rwhp. Pretty smooth power delivery. Was impressed with the power it made. Even more since she had done 480,000k!