for a daily, you wanna turbo that will spool well on the street. gt35r, turbonetics 60 or 62-1, presicion sc61 .... all will work well on the street and be big enough for 500+ hp.

as for manifolds, full race = good = VERY VERY $$$. i run an inline pro and i have no problems. it's a very good mani.

also, yes the drag kit will work well too. the good thing about the drag kit is that you can still keep a/c