Not quite sure what you mean. We replaced the pennant ropes on our 105 18 months ago. Paid an absolute fortune IMHO for two made up pennants from Northshore and when we got them to the boat found that the cringles were too large. A call to Northshore got a shrug and 'what can we do' response (unusual in fairness) but it was left to us to have two bushes made locally in order to make them fit. Make sure you measure and confirm sizes efore you order and pay up...
That having been said the replacement itself was fairly straightforward although we did have the keel assembly out of the boat at the time. The studs were greased with Blakes seacock grease prior to fitting the new pennants, as there needs to be some movement when the keel is raised and lowered.
PM me if you need any more info on the replacement.