well I have driven a gtst with rb26 and 2835r's
this vehicle http://www.meggala.com/ther32hot.htm
you get postivie boost from around 3k rpm full boost @ 6k rpm or so first gear was a waste of time when on boost 2nd gear was interesting/scary, third was scary and so was 4th If you can afford a motor to handle these turbo's you will find avery satisfying package the car was running 272 cams I think.
Talk to dr_drift from BMT on here he and his partner are performing work on that car btw it had a hks dogbox or trust one not sure it was a h pattern the nicest box I have used period.
meggala