I have one giant ABF634 SU that hangs off the back of the supercharger. The needle is what shipped with it, although I did change the air filter and body with a custom unit was designed by APT Fast, so that it can draw more air.
The stock air filter and housing doesn't draw as much air, resulting in an over-rich condition at high rpms. I wouldn't wish my worst enemy to try to get this air filter on or off, though. It's tight.
The newer supercharger kits from Moss moved the body of the supercharger further forward,to facilitate a larger air cleaner. I've heard the new units are not as aesthetically pleasing as the earlier units like mine, though.