N/A Motor Build UP

I currently have a 2K GSR with the following mods.

AEM Cold Air Intake
AEM Fuel Rail
AEM Fuel Pressure Regulator Best
AEM Fuel Filter
AEM Fuel Pressure Gauge
AEM Adjustable Cam Gears
AEM Power Pulleys Future Plans
Type R Valve Cover
DC Sports 4-1 Header
Tokico 5-Way Struts
Weapon R Coilovers
Neuspeed Upper Strut Bar
72mm JG Throttle Body
JG Edelbrock Victor Xmanifold
APEXI VAFC
Thermal 2 3/8 Cat Back Exhaust
High Flow Cat

My Gsr is showing signs of blowby on does very poorly on the compression tests. I have decided that I am going to build my motor and do up a racte head, but I don't really know what direction that I want to go in. I know that I want to go N/A. As for what internals thats what I am undecied on. Any Ideas or suggestions would be greatly appreciated.