New bearings,
New pistons wisco for cheap cp tomei hks for top end
all new seals
rod bolts head bolts big end ARP items
cranck collar
N1 pump
maybe cams or just cam gears
s15 injectors
bigger turbo gtr-s is good or 2535
power fc with boost kit or avcr
tomei or cometic head gasket
Basic build about 3-5k if you pull it out and put it back in your self
Also think about shot peneing the rods
and get it all balanced