THIS IS THE LESS DESIREABLE ADAPTOR PLATE ,AS THIS USES A VW PATTERN FLYWHEEL WITH AN EXTENDED CENTRE /SPACER PIECE,THESE ARE PRONE TO VIBRATION,THE BEST TYPE ARE THE ONES THAT USE THE ALFA FLYWHEEL,BUT USE AN EXTENSION PIECE ON THE RELEASE BEARING/INPUT SHAFT,ELIMINATING ANY VIBRATION PROBLEMS.
thats very interesting to know thanks ian........no surprise really, when a new flywheel is used the whole crankshaft and flywheel needs to be balanced as one assembly.......so you need to tear the engine apart!