Old school underhood superchargers...anyone remember?

Back in the day (early 80's), there was a company that manufactured underhood Roots-type superchargers for several engines, the SBC for sure, but maybe the small block Mopar also. They used two motorcycle superchargers in a cross ram configuration (each blower over the valve cover feeding the opposite bank of cylinders) and a side draft Weber mounted outboards on each one. Anyone know or remember the company and what may have happened to them? Out of left field I know, but I'd love one if they could still be found. Thanks!