Originally Posted by Z&I

The V2 will fit the Stillen bracket but will need to come forward about 3/8" so that the pulley tracks line up straight.
Had my V2 mocked up in the car checking fitment and clearance before having to stop the project.
Since the Stillen V3 attaches to the Stillen bracket via a crescent shaped spacer I had planned to fabricate a reinforced plate that would both extend the SC'r out for the alignment and minimize or eliminate bracket flex.
I was told that the V2 should increase boost by appx. 3 lbs [according to Vortech] over the V3.
Should be noted here that the motor was built and had 9.5:1 compression.
It is my opinion that if you do go with the V2 on a stock motor you will gain performance over the v3, but you should also select a pulley size that will keep the boost at around 9 lbs or so.