Dana:

J300-P1 Companion Flanges
J300-P2 Flange Yokes
J300-P3 Slip Yokes
J300-P4 End Yokes
J300-P5 Center Yokes
J300-P6 Tube Yokes & Tubing
J300-P6C Canadian version of Tube Yokes & Tubing
J300-P7 Tube Shafts
J300-P8 Yoke Shafts
J300-P9 Kits and Small Parts
J300-P9A Center Bearings
J300-P10 Companion Flange & End Yoke Applications
J300-P11 Spicer Couplings
J300-GI Safety Messages

Neapco:

Neapco Driveline Catalog - DS245

Universal Joint Application References:

Dana's online u-joint application listing
Neapco's u-joint application catalog (PDF - 2.5MB)
Rockford Driveline's u-joint application catalog (PDF - 2.5MB)