Thanks guys well here are the figures for tq which is what I want
in turbo form the 8v vs 16v
http://www.nissaninfiniticlub.com/zerothread?id=76355RPMs..........SOHC8v..........DOHC16v
2500............125.............115
2750............150.............130
3000............165.............150
3250............185.............160
3500............185.............175
3750............190.............180
4000............190.............195
In the UK most have the option of the better Euro 16v head
yet many seem to prefer the 8v for the street due to the
better tq achieved early.