Opened a new topic to make searching easier later on.
Just picked up my driveshaft for the T56 to R230. Here are the part numbers for the Tube flange and Universal joint (serviceable) at the R230 Diff. side:
1310 U-Joint: NEUJ 1 0153
1310 Q-45 Conversion Flange: FLNG 3102 69
Hope this helps folks!
Tim
BTW...My driveshaft (using the stock Z28 shaft, shortening, welding flange, both new universals and balancing) cost; $200.14 incl. tax