Henry thanks for the information glad you were diligent in your research. I ordered a set of Stants from Summit and plan to put them in my Flathead as soon as I get them. Made in the Good Ol' USA
. Looks like the opening is within 1mm of the old flip stats. I use the Skip Hanney pumps so these will be great. The 330 stats from Robert is what I had but if you look at the opening between the hose after they are cut down it is very small not allowing a lot of flow. I think these will be the ticket.