I choose the SC so as to not loose the appeal of the Beams. As such all the Rotrex converted owners of MK3's say the engine behave the same only that it feels like a 4 litre engine. The SC is gradual increase unlike the mad limited rush of a turbo. Personally if you want a turbo would have gone for a stock 3sgte.
But if it pleases you cool
just read all the threads associated with turboing a stock engine and you have everything. All the stocks i have read have blown up for one reason or another