I get a real kick out of reading the SU vs. Holly carb stuff here. Since I am older than most of you I remember having SUs on my 1960 MGA when I was in college about 45 years ago! They were regarded as OK but a pain in the rear even then. They are simple and efficient technology but they are ANCIENT technology. They were a pain to syncronize and tune 50 YEARS ago, doesn't that say something all by itself? The Holly is a more modern design and with four barrels is more efficient and simple for moving air and fuel. For everyday use I'd pick the Holly over multiple SUs any day. But for 21st century drivability go with EFI.