I like the procharger system compared to a top mount charger. Better intake temps with more efficient intercooler. They also make more linear power delivery and will keep screaming to red line, will also make more power if u select the right one. Top mount will make lot more torque off idle. If u go 383 torque will be everywhere so procharger might be the go
But if i was you and def want a blower id go 6l crate, valve springs and whatever else to make it reliable and then strap on either top mount or procharger. Both will perform excellent
Fiestl makes some good advice