Funny thing! I was looking for just the same thing the other night. qualityengineeredcomponents.com has an adapter kit for the flathead 6, it says for the 904 or 500 OD trans. Do you have a 6 or 8? The flathead 8 uses a different bellhousing pattern I think. The website says the 8 is in progress or special order, can't remember which one. It has several pictures, you'll have to fabricate kickdown linkage though. Check it out! Their phone no's are 888-436-4727 or 541-617-0613