Bore that V4 up to 2.0L, and put in a more aggressive cam, and not only will it shame Honda Vtec HP numbers, it'll blow them away with sheer unadulterated torque. add on a roots type supercharger and it's jizz in a tiny package. If you want more after that, you have Cosworth make a set of DOHC 16 valve heads for it (don't give me that pushrod block can't use DOHC heads bull. My LQ1 has a pushrod block and dohc heads)