Timing belt tensioner problem 928S Help !!!

[Murray928]

Has anyone ever successfully fitted the timing belt tensioner assembly (P/N 928 105 066 00) designed for M28.43/44/45/46 type engines to an M.28.21/22 type engine. Porsche say that this part supercedes the one (P/N 928 105 086 02) used on the M28.21/22 type. If so, what other modifications were necessary ? For example, would you need to change the carrier for the tension roller from P/N 928 105 540 05 ( for M28.11/12/19/22 types) to P/N 928 105 489 00 ( for M28.43/44/45/46) ? Are these tension roller carriers so different that the later type is needed in order for the push rod on the tensioner to meet the carrier in exactly the right spot ? (the housing on the later (43/44/45/46) tensioner is wider than the earlier( M28.22) and therefore sits about 5mm further out from the engine face).

Any help would be gratefully appreciated !!!

Below is a link is to a really useful table from 928GT.com, listing the different engine types. Mine is a Euro S2 1985 model of M28.22 type.

https://www.928gt.com/t-928engine.aspx