Tim,
Sorry about the wait. The shop I use is:

Sadler Power Train
1250 1st ST NW
Cedar Rapids, IA 52405
319-366-8238

I had a driveshaft shortened, joints replaced and balanced for a street rod I'm building (for $90) earlier this fall. While I was in there, I priced one for my 48. There's a couple of styles with prices to match but the cheaper one looked just like mine. Even if it didn't, I would make it work regardless of what it looked like,
Scott

Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!