I haven't, but am thinking of doing it..... if it's a cable you are after, a company called 'Speedy Cables' exists somewhere in the UK, and will supply cables to whatever length, with whatever ends you require..... also I think they can re-calibrate your speedo to suit the size of wheels you are choosing to fit... (just a point to note, here,... electronic speedos sometimes have facility for re-programming to suit different size wheels). Personally I'm using my Blitz2 for normal daily road use, on it's current wheels/tyres, (185/70/13 Mud+Snow), but intend to also use some widened, (banded) 12" steel Hillman Imp wheels, which will have either dumper-type or large size quad tyres fitted for more serious off-road work....