Have only seen the JR kit...a few guys over in IN have them
Set up looked real nice.
My thought on them was that the SVT redline is 7400, that little roots blower probably has a tough time makeing good boost up there??? A centrifical (ProCharger) would probably put better numbers down...
I was thinking about the procharger but it was a little too expensive for me and I wanted better all around performance with the roots rather than only high rpm horsepower provided with centrifugal superchargers.