Cylinder Heads BMW M42/44 V1 head porting £750.00 BDS V3 M96 cylinder head £1,650.00 Porsche m97 head porting v1 £1,500.00 BMW M42/M44 V3 Cylinder Head £2,500.00 cylinder head development £660.00 BMW M42/M44 V2 Cylinder Head £1,650.00