i think the line you'll get on here is that they're Renault only and that you need to buy a complete shaft. when i last rang, was told that they've stopped doing exchange shafts (?)
Renault won't supply the outer CV only (common in the industry), and no one seems to sell reconditioned CVs (just complete shafts). it's a bit of a 'mare as the shafts are apparently all different between the RS models and buying a recon one from somewhere like ECP/GSF might not give you exactly what you need - could try one to see if it matches yours though
otherwise, best bet is probably to go for a good s/h shaft, or contact a reconditioner
the current market for these (Renault only if you want to be sure) is going to be a problem for lots of people as these age; hopefully one of the bigger aftermarkets like ECP/GSF will sort it out, although wouldn't count on it given that they're all different and there'll be limited demand
