sticking with Nikon is rough on the wallet...
i've been looking at these two
http://www.bhphotovideo.com/bnh/controller/home?O=WishList.jsp&A=details&Q=&sku=84151&is=GREY
http://www.bhphotovideo.com/bnh/controller/home?O=WishList.jsp&A=details&Q=&sku=585343&is=GREY
and i shot most of the...
if you're running big ass 32mm spacers necessary to attempt good fitment, then 225/40 front and rear
if you're running OEM shadow fitment style, then 245/40 front and rear
get 4.36 gears for the mean time, my compression was ranging 102psi to 122 psi across all four, the last time i was at Desoto(and not much better any time before) with the white car, worked well enough.
a little big for low boost, but its free, what the hell.
I would suggest mounting it on the exhaust side of the engine, heat shielding it from the headers, run an inter cooler and at closer to 10psi.
Props to the old man for putting his time and money into this with you.
Dan was running a 17x8 at +10 with spacers and staying well inside the wheel well.
http://www.tamparacing.com/forums/nissan-builds-projects/536641-s14-reconstruction-56k-no-post6206349.html#post6206349
There is always the...