2X4 Dual Quads for Offy 360 390 - 450 cfm

I am needing to find matching 2x4 carbs that will fit on an offenhauser 360 manifold for a BB 383. I know, I know a new single 4 barrel can do the job, but, yes, I want the wow factor. I would like a matched set of 390 cfms, but can go up to 450 cfms. Prefer mechanical secondaries. These must be compatible with a 727 trans. All linkage and kickdown will be needed as well. I see a number of them listed on eBay, but none I am interested in. I have a matched set of Holley 4160 750cfm that I could trade, if anyone is interested in a trade. If not, paypal would be best.