I've now had almost a full summer with the speedo from the sub continent fitted, so thought I'd give an update. Just to reiterate it was ordered and delivered for the princely sum of about £25 and I then ***** around for a few months trying daft ways of adapting cables to fit (speedo head has RE fitting ) until I bit the bullet and got Venhills to make me one ,which they did cost, £45inc postage and with a spare inner cable .Fitted a breeze and worked with the bike on the centre stand and then waited for the good weather to arrive ,it didn't ,so had to go with what was thrown at us. Well it's working great and has recorded 545 miles ,I know pitiful but it really has been a crap summer , best is that its accurate to within a mile or at most2 mph . I've checked it against a mates SV susi and its bang on and also accurate when riding best one of those speed sensors .
Bottom line I've something that doesn't look to out of place, keeps Mr Plod happy and didn't cost me a second mortgage to get ,hope that this is of help for anyone who needs a speedo ,cheers Bob.