well i bought my head from evans honda specialist, then i bought most of my internals for the head from japan spoon sports, like springs,valves retiners,cams,cam gears,stuff like that, than i took it to my firends shop and he took a week doing it right, they need to use a machine shop to do the oil supply and tap the old oil supply then they need to swap to things i forgot the name of them they are on ls block opposite from vtec block, they need to pull the whole engine out, so they could do the oil suplly correctly,also i would sugest to get rod bolts thicker ones so the could handle vtec reving high,the vtec wiring ,i sugest odb-1 so you could chip the ecu and its easier for you, it up to you changing pistons,and more well i don't want to write a book so the cost for a good set up with you having most of the parts, would be around 1500 done right, i pay a lot for mine for all the internals i have,but trust me its worth it, now i'm just working on a on swaping my tranny even tho i'm auto i spank the sh*t out gs-r and i keep up with type r all the way to third gear, good luck man!!!