Just went on there site and talked with a tech at Spectre
http://www.spectreperformance.com/#CARS
A lot more to their product than meets the eye for sure. They have a few old school airboxs that use conventional hi flow air cleaners that I think I can make look old school and function fantastic.
Their low profile worst case scenario would flow 950cfm, he said a 428 funtion at 100% VE could only use about 750 at best, so this should work great,I would not use their cheap looking plastic piping I would get the good 4" silicone stuff from Pegasus. Now, I need to do some measuring and planning.
Should be all complete for about 300.00