You should snoop around the dakota boards. A lot of us run supercharged 360s and 318s as there were at least 3 bolt-on kits available four our trucks. I have had a paxton and a vortech V1 and V2 ... the NOVI 2000 is a sick blower can make near 600rwhp on a 360 motor with cool air and good gas. If I were building a motor specifically for a centri, I wouldn't go lower than 9.0:1 and might even run 9.5:1 or more. A centrifugal SC pulleyed to 10 psi will be weak down low and a low comp motor wont help....