i doubt the highflows will be all that much laggier than stock.. they will only be small highflows nothing big.. so im not fussed.. also i'd like to go 2530's but.. for the price of the highflows i am not fussed they will do the job.. if they get me 300rwkw i'll be happy, if not i'll still be happy that there are steel wheeled turbo's there not ceramic.
i will never be goin 3litre in the silvia.. i want to retain the factory bonnet and if i go 3litre.. means i have to make a hole and adapt some sort of scoop/bump to it.. i like the stock bonnet.