sorry for the confusion, i was relying on my memory regarding the original weight, so you may be right with the 11.5 or 11.34kgs, but the machined weights are correct.
Pukka
sorry for the confusion, my point was more that someone fitting a 4.5kg flywheel in a silvia with std ecu (where it cant be remapped to help the slow running) would make the car a pain in day to day use. My car weighs 750kgs, uses a 9.5kg fly and AP paddle and nismo cover and is crap at anything below 20mph. Luckily its only for moving around the paddock or pits but it does p*ss me right off. Couldnt put up with it in a road car. I would have thought that a heavier car (silvias are 11-1200kgs right?) would be worse still.
As for the fly, it does look the nuts, just wish they did one to suit the ET bolt pattern
