400 4 barrel swap

So what I'm getting out of this is the 440 manifold ain't gonna happen. So does anybody have or know where I can get a 4 barrel manifold for my 400?
they are readily available through summit, jegs etc etc. run a want add here for one and use the search function in the mechanical parts for sale. I see them for sale from time to time. by the time you pay someone to machine a 440 intake down you could have bought the right one