Thanks for all the geat ideas guys. I didn't know car and truck pumpkins were interchangeable. I did get a reply from Vintage Auto Parts in Denver (www.vapinc.com) about gears:
1937-56 Dodge car, all models with 8 1/4" ring gear. WX2390-1 39-10 3.90 to 1 $230.00
1941-56 Dodge WX2390-1 39-10 3.90 to 1 $365.00
Their description is rather vague, so perhaps doing the direct pumpkin swap from a passenger car would be the easiest thing to do for now. If I can get a 3:73 ratio, then a four speed tranny might be the next upgrade to help me out on the uphill and off-the-line starts. I assume the first gear on a 4-speed is lower than first on a 3-speed...better check the manual first!
I'm living in San Juan Capistrano, CA, in south Orange County. I picked up the "y'all" from going to school in Georgia and it stuck. I get a lot of flack for it around here but that ain't going to change me.