Anyway, the engine is in for a full re-build with argo forged H-beam rods / rod bolts, forged pistons, hardened crank, etc, plus a full blueprint and extensive machine job. Nizpro are doing the work and the engine will be able to support 500 rwkW without problems. The aim is to take power to above 400 rwkW of nice streetable power. Cheers Robin. I have heard they also add a girdle to make the crank one with the block to stop flex