Here are the turbine specs: TD06h: Inducer - 67.2mm Exducer - 58.8mm TD06SL2: Inducer - 61mm Exducer - 54mm TD05h: Inducer - 56mm Exducer - 49.2mm Most td06sl2 housing look to be an evo3 style housing. This, from my research, is impossible to machine to fit anything larger than a TD05h wheel. So these housing must be cast for a TD06SL2 turbine wheel. I did notice that the exducer for the TD06H is smaller than the exducer on the td06sl2, I am assuming this is where the problem lies with machining the housing. I might have answered my own question here, but I have never machined a turbine housing, nor do I owe a TD06SL2 turbine wheel to compare. EDIT: Ignore the question above, since I had the specs backwards it no longer pertains. My orginal question still remains, can a TD06SL2 turbine housing be machined to fit a TD06H?