Few quick questions about the the TD series then. (i'm going to start a tread dedicated to Mitsubishi, Greddy, Trust turbo results because i've been looking for results for ages and have found very few and if i do find any they are missing bits like what size rear housing they are using).
A T67 is basically a TD06SL2-25G isn't it, in that the turbine side is the same it just they have a the bigger 78mm compressor instead of the 20G's 68mm compressor. Therefore the turbine housings should be interchangeable, so if there is a 10cm T67 turbine housing it should fit the 20G.
Have you had anyone running a Kando Dynamic turbo yet, there are a few threads on EVO forums and they seem to be a good bit of gear and they have both 8 and 10 housings for the L2. They are copy turbos but seem to be good quality.