Thanks Bill, keeping everything inline was my instinct but I found this diagram while researching the subject indicating that it's "Wrong" - go figure!
Many gassers have their engines mounted with a significant tail down angle. Was this to induce more rear weight transfer (the prevailing theory of the day) or is it to eliminate drive shaft angle?
Checked the '31 Ford, the Pirellis in that kit appear to be the same style and size as the '41 Willys. They are both larger than the tire I show above.