Picked this off of Facebook 348-409 groups. It can be done. You just have to be careful. In theory it looks like an issue but keep in mind that fluid dynamics are a magical thing that blow away experts in many fields every day. Remember the 881 intakes have those hard 90 degree corners inside the intakes. Someone at GM thought that it was a good idea and they ran with it. Turns out they were very wrong because Every dual quad Edelbrock made today isn't really special outside of the fact that they simply did some flow tests before saying "Make them".