I don't believe the '40 will work engine/bellhousing, although I guess anything can work with enough time and money. I think the later models '49/up. Redrock has what looks to be a reasonable priced kit. They even have a kit for the 4.3 chevy. I wish they had that when I started building my 2.8 V6. It would have saved me a lot of headaches. Awesome henry also has a kit for the V8.