Another VR4 Upgrade?

[SN95GTS]

I have a SN2000 producing 6psi bought if from Craig about a year ago and now looking to up the boost I am still running stock injector's looking to add 42lbs the car is a 95 Mustang 5.0 my best time to date is a 12.41 at 113.4 mph I have the Snow Performance kit, full exhaust, GT40 Y head's, E cam, GT40 intake, and forged pistion's. What kind of difference would I gain by upgrading to the VR4 and what is my potential.

[speedytang]

If you send to Craig and let him put the max. limit on the VR4 you will see between 13-15psi and double your air flow. I build 485 rwhp with a 150k+ engine with only ported heads. You will need the 42lb injectors and at least a 80mm MAF and at least a 70mm T.B. and a power pipe and switch to a 8rib belt setup. The price as you can see really increases to get the parts together to allow the unit to do its job. This is the same stuff you would need also if you went with a Novi 2000.