If your using a cgi block then you want to build it with all the right parts , talk to ian Howell he get cp piston or arias Pistons and eagle rods or arrow rods. Eagle more cheaper but they did over 500 bhp on my engine without issues. I would also bore it to 2.1 litres as it would be rude not to.
What cgi block have you got , the wrc one or the mountune one which is the same as a standard blacktop but just made from cgi?

If you've got wrc then there's a shit load of work just to fit it all together you will need wrc components.

Cheers paul