Ended up with a 03 cobra with an On3 turbo kit with a 2004 Mach 1 motor and trans. Long story, paid too much m, oh well

I want to crank the boost up on this thing. What rods and pistons should I be looking at to achieve some significant HP gains and sort of bullet proof this thing?

all suspension and rear are beefed up, was a twin turbo car originally.