Mt54, are you sure that 3.55 third member is not from a car? I used a 1950 Chevy car rear end with 3.55 gears to convert my '36 Chevy pickup from 4.11 to 3.55 gears. Those 3.55 gears were in 1950-54 powerglide equipped cars.
Where in California are you? I'm in Sonoma County. If you want any information on my 3.55 conversion my email is rwaldbaum at aol dot com.
Ray