Are these mods compatable?
 

The mods that I'm planning on getting over the next few weeks are:

M2 Dual Tip catback
Pettit Cool charge II IC
Koyo Radiator
Pettit Intake
Pettit Power Pully Kit
Pettit ECU (I wont be upgrading any more than this for a long time, so I don't need a PFC for now)
I currently have a Pettit Downpipe and an N-tech high flow cat.

Are these mods compatable with each other?
Will the IC and the Koyo radiator fit with each other?
I'm running 12.5 psi boost now, and plan on limiting it to 14 or 15 psi when I get the intake and CB; do I need to upgrade the fuel system at this boost even with the ECU upgrade?
If I do need a fuel system upgrade what would be the best combination of pump and injectors?

Thanks for your advice.

A fluidyne radiator will probably be an easier fit but you're not likely to have any problems with those components (you could always ask Pettit).

You should not run 14-15 psi regularly without upgrading the fuel system. The injectors will be running close to 100% duty and that's just not safe. To run 14-15 psi regularly, you will need upgraded secondary injectors (1200cc +) and a fuel pump. You don't need to upgrade the fuel pump unless you upgrade the injectors. Of course, the negative of this is that a Pettit ECU can't handle upgraded injectors and you will need a stand-alone (PFC, Haltech, AEM, Tec III) to properly run them.

All that said, running the car daily at 12-13 psi and only using 14-15 psi for a drag run or something like that would probably be safe. Probably....