ok so I read Berniesboxes are the way to go. I have checked the website and this seems to be the diffrence between these stages:


> Stage 1 uses uprated Ford viscous limited slip diff £450.00
> Stage 2 uses Quaife ATB limited slip diff £800.00


At what BHP- / Torque-level is it neccesary to go for Stage 2 ?
350 pounds is a lot of money to simple choose Stage 2....