Upgraded twins vs single turbo for 500whp?

[flawlessfinishcarpentry]

Twin 2867s will be very laggy on a 3.0L, as they are significantly larger than the 6266 they are replacing, +GT28s are generally laggy for their size anyway. My car makes 14.5psi @ 3000 and peak power @7700rpm, and that's the (only) way it should be IMO...

You may know the car. Its connels montego blue cpe car. My name is Joe Mounts and my number is 717-332-3042 if you have any knowledge of this build I'd like to hear your thoughts