Vibration Isolator? Its called a Flex Section...and it is for compensation of Engine Torque on the motor mounts.
I dont work for RPS...or even know the guy. But I did call him up and speak with him. He is very knowledgable....and competent.
He said everything will bolt right up and fit under a stock flat hood....unless you use a High Rise Intake such as a M1 or Indy intake, but will clear with a Air Gap or other low rise 4bbl intake.
No offense taken...and I wasnt trying to pick a fight either.....just trying to add some rational to this subject.
Cheap Skates always want top $$$$ R&D'd products for chump change..then they want a warranty on top of it all....good luck getting any sales or any Kudos with most of these guys....most of them think turbo headers should cost as much as A-body heddmans.