as far as i understand you can get pistons and rods for 900 cams for 800? brian crower stage 2 is only like 400. dual fans can be easily had for 300. koyo rad about 300. and as for your kit… ur turbo kit is insanely expensive. bings intercooler kit 500 shipped gt2871r from bing is 1225. arp head stud 180 cometic head gasket 130 plus some random bov for 2 bills and ur emanage and tune for another 1600. you can grab urself a megan turbo manifold is like what 200? turbo elbow + downpipe for 230 from bings. so total is what so far? so for a fully built ka with gt2871r $6065 compared to your stock sr20 for 5500 i think i would rather pay the extra 600 dollars and get the now more reliable and much much more powerful ka over a stock sr.
but in all honesty. when it comes down to it. its an arguement that will go on forever. kinda like the muscle vs imports shit. its just what you prefer.