I agree i don't think it would be fun using those covers with a big ole booster. Maybe with a body lift.I do not think these valve covers would have fit with a vacuum booster.
Mine i actually moved the booster over outboard plus lowered the engine down about a inch and a half and with the trickflow cast covers the back nut (i use studs/nuts) is an adventure.
That's lookin really good. That pulley setup is killer