You would probably need a custom exhaust manifold to bolt onto the subi turbo flange. Same for the exhaust side. Other than that, it could work.

Pretty sure you can just swap the turbine housing.

Sourcing a dsm flanged turbine housing factory cut for a td06h wheel may be difficult. But if you find one, it's easy enough to swap. However, an original 7cm MHI turbine housing from a Evo 1 or 2, or even a 6cm from a 14b should have enough meat to allow the turbine housing to be cut for the bigger wheel. The Evo 3 turbine housing, and all the eBay copies of it, will probably not have enough material to be cut. Also, cutting a well used housing may be difficult depending on the amount of carbon impregnated in the casting.

I would check with @JusMX141 or turbo lab or another turbo rebuilder near you.

Need a DSM turbine housing that's cut for a TD06H turbine. Cannot be a Genuine 78-13700 Evo III turbine housing or any of the aftermarket copies as the outlet flange is too thin to accept a turbine with a 58.8mm exducer...will need to be a 78-11830 or 78-10700 7cm2 housing...neither of which are easy to come by in good shape anymore.

It would be easier to swap the turbo to a TD05H turbine, then you can run almost any 16G turbine housing you'd wish. PM me if you need assistance with this...there will be balancing involved.