correct me if im wrong but you will need a big turbo if you want high rpm power,
if you take for example an eagle talon wich boost at 12 psi, the turbo kick at 3500rpm...
before the spool a civic can follow that
, if you put a smaller turbo on a Talon (wich i already try, (the turbo was off a Protege) i think, and the turbo spooled at 2500rpm, but we were lacking high rpm boost, in fact it was good for autocross but slow on highway.)
i presume that on a 3800 v6 it will come sooner than 3500, like 2200-2500.
smaller is the turbo , sooner will be the power but youll have nothing in high rpm.
(thats why twin-turbo exist,lot of boost but you have it at low rpm)
go at least with Talon\eclipse\laser turbo or bigger 14 or 16 psi can be good or you will have sc and turbo at like 3000 rpm and feeling nothing at 5000.
may be a small turbo can do the job too, hard to say, its at your liking.
may be with a boost controller you can adjust all that, anyway, my bet is at something close to 12 psi or more.
its been a while i dont play with turbo car, and the test we did was not involving a boost controller, i dont know if you can adjust rpm spool point??
Good luck, keep us inform , nice project.