Bugeye STI has a 207 anyway, buy a new 207 short engine, gasket set, plus 10-12 hours labour, probably about $5500-$6000 at the most.

Be a good idea to determine why the old engine failed if you don't already know. Not just what failed.

Or you could rebuild the engine in your car with aftermarket pistons, rods, bearings for about $500 more.
A reflash would allow an STI to run a 2.5, Ecutek, Verso.

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F.B. Racing
01 WRX (STI badged)
2010 XR5 Focus
06 Impreza Hatch 2.0i