Sorry for the late replies. Been pulling the motor out all day.
N/A would be the best. But here's the skinny... I know someone that has these with a NOVI and is running 550 something horses with no problems what so ever. I have also seen someone run these with a Saleen blower and said to have problems cause of the low end. However when they were in my car with a Saleen blower I had NO problems with the cams themselves once it was TUNED CORRECTLY.
When I said it wasn't good for my application I mis-spoke too soon in apprehension that these help cause the motor problems that I had. This was not the case as all problems were related to the Kooks high-flow cats giving out.
I believe with the correct tune, these will work for any application regardless of what others have said and have no experience with them.