Depends on a few factors.
1. which x-member you will use with your swap. IE Turbo Legacy or GD A/B
The Turbo Legacy will lower the engine about 1 inch lower in the engine bay.
That way you can use a TXS TMIC or most large aftermarket ones.
2. Any JDM ver 7/8 will fit under the hood.
3. To use the USDM STI's you need to modify the mounting brackets.