thinking about buying a boosted crx si. it has a swaped b18b1 obd1 with a pieced together turbo kit w/ a monster intercooler! it has a tial 38mm wastegate w/ 8lb. spring, 3 inche downpipe, greddy BOV, adjustable FPR, Ramhorn turbo manifold, msd coil, cap, and plugwires, turbonetics hotside with .47a/r and garrett coldside .60 or so a/r, also comes with a apexi safc. bad thing is it's boosted on stock internals and not tuned. the guy only wants 3K which is why im jumping all over it but how much more money will it take to finish the build and would i need to change to forged internal or are the stock ones fine. also the turbo needs rebuilt it blows oil out of the exhaust. but i can say it's QUICK even for being untuned. yeah i know get it TUNED, which i'll be taking it to mainstream if i buy. want to know opinions and what all is left to do. any info will be extremely helpful!