Webers on a blower??

Anyone have any experience using 4 Weber 48IDA carbs on a 6/8-71? I've just procured a complete setup for a blower. Unit has been sitting for years and since I have zero experience with these carbs I'm asking input from those with experience. Unit has manifold to blower, 4 48IDA carbs (Italy), fuel line plumbed and all linkage. How should I proceed from the start. Unit will be installed on a 413ci SBM setup with a 6-71. Suggestions appreciated!!