Besides me, that is...
Same size/weight, WAY more power potential.
Considerable more efficient, not much more expensive.
People have boosted the stock engine at 12.5:1 to over 400whp with success.
2015 WRX is reported to have peak torque from 2500 to 5500rpm.
7500RPM redline (stock) doesn't hurt either.
Fire away...
David