In 3 secs (~7000 rpm) it already made 200 rwhp more then my old notchback did at 6500 rpm, same boost, roughly the same size motor as well(actually this one is slightly smaller c.i. wise)...needless to say I have a new found respect for the 4V mod motors..
We found peak power to be right around 8000...not sure if its the cams, heads, or maybe converter causing this but I'm very happy with the results regardless.