Be a man and slap an M122 on that bitch! Seriously though, a K20A2 with an M90 can make 340whp with stock compression and IPS blower cams. I know it has more RPM than the KA could dream of but Im sure you could get close to that and have a flat TQ curve from damn near idle to redline. Have you considered an SR with a roots blower? You could get the big RPM of the K series, RWD, and its a bolt-in swap!