well i am still contemplating turbocharging the rs2k lump but have had trouble finding information on this conversion

here's my thinking..........

fit the c20let pistons by maching the rods to fit, as they are both 86mm
i already have a 200sx manifold and t25 turbo that i have been told is a direct replacement??
fit erst oil pump & weld/tap an oil return into sump
fit a front mount intercooler and plumb it in

now could i just leave it at that with the existing inlet, fuel rail and management and get it remapped???

if not any suggestions on replacement parts please as i, and probably 99 percent of britain is on a tight budget