It's a VGT (variable geometry turbo). So the vanes are fixed, but there's a collar that moves to change the amount of the turbine being used. Means fast spool, high boost. I will be doing the fab myself. Hopefully it works. But I've also got a pair of T3 turbos and a lysholm supercharger so I'll get something to work. For $50 I just couldn't pass up this turbo.